19961640

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:185

約数の個数: 160

約数和(自身を含む): 68868360

約数和(自身を除く): 48906720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 61, 72, 81, 90, 101, 108, 120, 122, 135, 162, 180, 183, 202, 216, 244, 270, 303, 305, 324, 360, 366, 404, 405, 488, 505, 540, 549, 606, 610, 648, 732, 808, 810, 909, 915, 1010, 1080, 1098, 1212, 1220, 1464, 1515, 1620, 1647, 1818, 1830, 2020, 2196, 2424, 2440, 2727, 2745, 3030, 3240, 3294, 3636, 3660, 4040, 4392, 4545, 4941, 5454, 5490, 6060, 6161, 6588, 7272, 7320, 8181, 8235, 9090, 9882, 10908, 10980, 12120, 12322, 13176, 13635, 16362, 16470, 18180, 18483, 19764, 21816, 21960, 24644, 24705, 27270, 30805, 32724, 32940, 36360, 36966, 39528, 40905, 49288, 49410, 54540, 55449, 61610, 65448, 65880, 73932, 81810, 92415, 98820, 109080, 110898, 123220, 147864, 163620, 166347, 184830, 197640, 221796, 246440, 277245, 327240, 332694, 369660, 443592, 499041, 554490, 665388, 739320, 831735, 998082, 1108980, 1330776, 1663470, 1996164, 2217960, 2495205, 3326940, 3992328, 4990410, 6653880, 9980820, 19961640]

約数ペア:

[(1, 19961640), (2, 9980820), (3, 6653880), (4, 4990410), (5, 3992328), (6, 3326940), (8, 2495205), (9, 2217960), (10, 1996164), (12, 1663470), (15, 1330776), (18, 1108980), (20, 998082), (24, 831735), (27, 739320), (30, 665388), (36, 554490), (40, 499041), (45, 443592), (54, 369660), (60, 332694), (61, 327240), (72, 277245), (81, 246440), (90, 221796), (101, 197640), (108, 184830), (120, 166347), (122, 163620), (135, 147864), (162, 123220), (180, 110898), (183, 109080), (202, 98820), (216, 92415), (244, 81810), (270, 73932), (303, 65880), (305, 65448), (324, 61610), (360, 55449), (366, 54540), (404, 49410), (405, 49288), (488, 40905), (505, 39528), (540, 36966), (549, 36360), (606, 32940), (610, 32724), (648, 30805), (732, 27270), (808, 24705), (810, 24644), (909, 21960), (915, 21816), (1010, 19764), (1080, 18483), (1098, 18180), (1212, 16470), (1220, 16362), (1464, 13635), (1515, 13176), (1620, 12322), (1647, 12120), (1818, 10980), (1830, 10908), (2020, 9882), (2196, 9090), (2424, 8235), (2440, 8181), (2727, 7320), (2745, 7272), (3030, 6588), (3240, 6161), (3294, 6060), (3636, 5490), (3660, 5454), (4040, 4941), (4392, 4545)]