20259720

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1$

素因数の和:86

約数の個数: 240

約数和(自身を含む): 75729060

約数和(自身を除く): 55469340

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 37, 39, 40, 45, 52, 54, 60, 65, 72, 74, 78, 81, 90, 104, 108, 111, 117, 120, 130, 135, 148, 156, 162, 169, 180, 185, 195, 216, 222, 234, 260, 270, 296, 312, 324, 333, 338, 351, 360, 370, 390, 405, 444, 468, 481, 507, 520, 540, 555, 585, 648, 666, 676, 702, 740, 780, 810, 845, 888, 936, 962, 999, 1014, 1053, 1080, 1110, 1170, 1332, 1352, 1404, 1443, 1480, 1521, 1560, 1620, 1665, 1690, 1755, 1924, 1998, 2028, 2106, 2220, 2340, 2405, 2535, 2664, 2808, 2886, 2997, 3042, 3240, 3330, 3380, 3510, 3848, 3996, 4056, 4212, 4329, 4440, 4563, 4680, 4810, 4995, 5070, 5265, 5772, 5994, 6084, 6253, 6660, 6760, 7020, 7215, 7605, 7992, 8424, 8658, 9126, 9620, 9990, 10140, 10530, 11544, 11988, 12168, 12506, 12987, 13320, 13689, 14040, 14430, 14985, 15210, 17316, 18252, 18759, 19240, 19980, 20280, 21060, 21645, 22815, 23976, 25012, 25974, 27378, 28860, 29970, 30420, 31265, 34632, 36504, 37518, 38961, 39960, 42120, 43290, 45630, 50024, 51948, 54756, 56277, 57720, 59940, 60840, 62530, 64935, 68445, 75036, 77922, 86580, 91260, 93795, 103896, 109512, 112554, 119880, 125060, 129870, 136890, 150072, 155844, 168831, 173160, 182520, 187590, 194805, 225108, 250120, 259740, 273780, 281385, 311688, 337662, 375180, 389610, 450216, 506493, 519480, 547560, 562770, 675324, 750360, 779220, 844155, 1012986, 1125540, 1350648, 1558440, 1688310, 2025972, 2251080, 2532465, 3376620, 4051944, 5064930, 6753240, 10129860, 20259720]

約数ペア:

[(1, 20259720), (2, 10129860), (3, 6753240), (4, 5064930), (5, 4051944), (6, 3376620), (8, 2532465), (9, 2251080), (10, 2025972), (12, 1688310), (13, 1558440), (15, 1350648), (18, 1125540), (20, 1012986), (24, 844155), (26, 779220), (27, 750360), (30, 675324), (36, 562770), (37, 547560), (39, 519480), (40, 506493), (45, 450216), (52, 389610), (54, 375180), (60, 337662), (65, 311688), (72, 281385), (74, 273780), (78, 259740), (81, 250120), (90, 225108), (104, 194805), (108, 187590), (111, 182520), (117, 173160), (120, 168831), (130, 155844), (135, 150072), (148, 136890), (156, 129870), (162, 125060), (169, 119880), (180, 112554), (185, 109512), (195, 103896), (216, 93795), (222, 91260), (234, 86580), (260, 77922), (270, 75036), (296, 68445), (312, 64935), (324, 62530), (333, 60840), (338, 59940), (351, 57720), (360, 56277), (370, 54756), (390, 51948), (405, 50024), (444, 45630), (468, 43290), (481, 42120), (507, 39960), (520, 38961), (540, 37518), (555, 36504), (585, 34632), (648, 31265), (666, 30420), (676, 29970), (702, 28860), (740, 27378), (780, 25974), (810, 25012), (845, 23976), (888, 22815), (936, 21645), (962, 21060), (999, 20280), (1014, 19980), (1053, 19240), (1080, 18759), (1110, 18252), (1170, 17316), (1332, 15210), (1352, 14985), (1404, 14430), (1443, 14040), (1480, 13689), (1521, 13320), (1560, 12987), (1620, 12506), (1665, 12168), (1690, 11988), (1755, 11544), (1924, 10530), (1998, 10140), (2028, 9990), (2106, 9620), (2220, 9126), (2340, 8658), (2405, 8424), (2535, 7992), (2664, 7605), (2808, 7215), (2886, 7020), (2997, 6760), (3042, 6660), (3240, 6253), (3330, 6084), (3380, 5994), (3510, 5772), (3848, 5265), (3996, 5070), (4056, 4995), (4212, 4810), (4329, 4680), (4440, 4563)]