21153936

素因数分解:

$2^4\times 3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{277}}^1$

素因数の和:368

約数の個数: 80

約数和(自身を含む): 57637184

約数和(自身を除く): 36483248

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 37, 43, 48, 74, 86, 111, 129, 148, 172, 222, 258, 277, 296, 344, 444, 516, 554, 592, 688, 831, 888, 1032, 1108, 1591, 1662, 1776, 2064, 2216, 3182, 3324, 4432, 4773, 6364, 6648, 9546, 10249, 11911, 12728, 13296, 19092, 20498, 23822, 25456, 30747, 35733, 38184, 40996, 47644, 61494, 71466, 76368, 81992, 95288, 122988, 142932, 163984, 190576, 245976, 285864, 440707, 491952, 571728, 881414, 1322121, 1762828, 2644242, 3525656, 5288484, 7051312, 10576968, 21153936]

約数ペア:

[(1, 21153936), (2, 10576968), (3, 7051312), (4, 5288484), (6, 3525656), (8, 2644242), (12, 1762828), (16, 1322121), (24, 881414), (37, 571728), (43, 491952), (48, 440707), (74, 285864), (86, 245976), (111, 190576), (129, 163984), (148, 142932), (172, 122988), (222, 95288), (258, 81992), (277, 76368), (296, 71466), (344, 61494), (444, 47644), (516, 40996), (554, 38184), (592, 35733), (688, 30747), (831, 25456), (888, 23822), (1032, 20498), (1108, 19092), (1591, 13296), (1662, 12728), (1776, 11911), (2064, 10249), (2216, 9546), (3182, 6648), (3324, 6364), (4432, 4773)]