20491744

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:288

約数の個数: 96

約数和(自身を含む): 51480576

約数和(自身を除く): 30988832

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 32, 52, 56, 62, 91, 104, 112, 124, 182, 208, 217, 224, 227, 248, 364, 403, 416, 434, 454, 496, 728, 806, 868, 908, 992, 1456, 1589, 1612, 1736, 1816, 2821, 2912, 2951, 3178, 3224, 3472, 3632, 5642, 5902, 6356, 6448, 6944, 7037, 7264, 11284, 11804, 12712, 12896, 14074, 20657, 22568, 23608, 25424, 28148, 41314, 45136, 47216, 49259, 50848, 56296, 82628, 90272, 91481, 94432, 98518, 112592, 165256, 182962, 197036, 225184, 330512, 365924, 394072, 640367, 661024, 731848, 788144, 1280734, 1463696, 1576288, 2561468, 2927392, 5122936, 10245872, 20491744]

約数ペア:

[(1, 20491744), (2, 10245872), (4, 5122936), (7, 2927392), (8, 2561468), (13, 1576288), (14, 1463696), (16, 1280734), (26, 788144), (28, 731848), (31, 661024), (32, 640367), (52, 394072), (56, 365924), (62, 330512), (91, 225184), (104, 197036), (112, 182962), (124, 165256), (182, 112592), (208, 98518), (217, 94432), (224, 91481), (227, 90272), (248, 82628), (364, 56296), (403, 50848), (416, 49259), (434, 47216), (454, 45136), (496, 41314), (728, 28148), (806, 25424), (868, 23608), (908, 22568), (992, 20657), (1456, 14074), (1589, 12896), (1612, 12712), (1736, 11804), (1816, 11284), (2821, 7264), (2912, 7037), (2951, 6944), (3178, 6448), (3224, 6356), (3472, 5902), (3632, 5642)]