20397960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1$

素因数の和:149

約数の個数: 256

約数和(自身を含む): 79315200

約数和(自身を除く): 58917240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 17, 18, 20, 22, 24, 27, 30, 33, 34, 36, 40, 44, 45, 51, 54, 55, 60, 66, 68, 72, 85, 88, 90, 99, 101, 102, 108, 110, 120, 132, 135, 136, 153, 165, 170, 180, 187, 198, 202, 204, 216, 220, 255, 264, 270, 297, 303, 306, 330, 340, 360, 374, 396, 404, 408, 440, 459, 495, 505, 510, 540, 561, 594, 606, 612, 660, 680, 748, 765, 792, 808, 909, 918, 935, 990, 1010, 1020, 1080, 1111, 1122, 1188, 1212, 1224, 1320, 1485, 1496, 1515, 1530, 1683, 1717, 1818, 1836, 1870, 1980, 2020, 2040, 2222, 2244, 2295, 2376, 2424, 2727, 2805, 2970, 3030, 3060, 3333, 3366, 3434, 3636, 3672, 3740, 3960, 4040, 4444, 4488, 4545, 4590, 5049, 5151, 5454, 5555, 5610, 5940, 6060, 6120, 6666, 6732, 6868, 7272, 7480, 8415, 8585, 8888, 9090, 9180, 9999, 10098, 10302, 10908, 11110, 11220, 11880, 12120, 13332, 13464, 13635, 13736, 15453, 16665, 16830, 17170, 18180, 18360, 18887, 19998, 20196, 20604, 21816, 22220, 22440, 25245, 25755, 26664, 27270, 29997, 30906, 33330, 33660, 34340, 36360, 37774, 39996, 40392, 41208, 44440, 46359, 49995, 50490, 51510, 54540, 56661, 59994, 61812, 66660, 67320, 68680, 75548, 77265, 79992, 92718, 94435, 99990, 100980, 103020, 109080, 113322, 119988, 123624, 133320, 149985, 151096, 154530, 169983, 185436, 188870, 199980, 201960, 206040, 226644, 231795, 239976, 283305, 299970, 309060, 339966, 370872, 377740, 399960, 453288, 463590, 509949, 566610, 599940, 618120, 679932, 755480, 849915, 927180, 1019898, 1133220, 1199880, 1359864, 1699830, 1854360, 2039796, 2266440, 2549745, 3399660, 4079592, 5099490, 6799320, 10198980, 20397960]

約数ペア:

[(1, 20397960), (2, 10198980), (3, 6799320), (4, 5099490), (5, 4079592), (6, 3399660), (8, 2549745), (9, 2266440), (10, 2039796), (11, 1854360), (12, 1699830), (15, 1359864), (17, 1199880), (18, 1133220), (20, 1019898), (22, 927180), (24, 849915), (27, 755480), (30, 679932), (33, 618120), (34, 599940), (36, 566610), (40, 509949), (44, 463590), (45, 453288), (51, 399960), (54, 377740), (55, 370872), (60, 339966), (66, 309060), (68, 299970), (72, 283305), (85, 239976), (88, 231795), (90, 226644), (99, 206040), (101, 201960), (102, 199980), (108, 188870), (110, 185436), (120, 169983), (132, 154530), (135, 151096), (136, 149985), (153, 133320), (165, 123624), (170, 119988), (180, 113322), (187, 109080), (198, 103020), (202, 100980), (204, 99990), (216, 94435), (220, 92718), (255, 79992), (264, 77265), (270, 75548), (297, 68680), (303, 67320), (306, 66660), (330, 61812), (340, 59994), (360, 56661), (374, 54540), (396, 51510), (404, 50490), (408, 49995), (440, 46359), (459, 44440), (495, 41208), (505, 40392), (510, 39996), (540, 37774), (561, 36360), (594, 34340), (606, 33660), (612, 33330), (660, 30906), (680, 29997), (748, 27270), (765, 26664), (792, 25755), (808, 25245), (909, 22440), (918, 22220), (935, 21816), (990, 20604), (1010, 20196), (1020, 19998), (1080, 18887), (1111, 18360), (1122, 18180), (1188, 17170), (1212, 16830), (1224, 16665), (1320, 15453), (1485, 13736), (1496, 13635), (1515, 13464), (1530, 13332), (1683, 12120), (1717, 11880), (1818, 11220), (1836, 11110), (1870, 10908), (1980, 10302), (2020, 10098), (2040, 9999), (2222, 9180), (2244, 9090), (2295, 8888), (2376, 8585), (2424, 8415), (2727, 7480), (2805, 7272), (2970, 6868), (3030, 6732), (3060, 6666), (3333, 6120), (3366, 6060), (3434, 5940), (3636, 5610), (3672, 5555), (3740, 5454), (3960, 5151), (4040, 5049), (4444, 4590), (4488, 4545)]