28138720

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2477}}^1$

素因数の和:2563

約数の個数: 48

約数和(自身を含む): 67441248

約数和(自身を除く): 39302528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2477, 2840, 4954, 5680, 9908, 11360, 12385, 19816, 24770, 39632, 49540, 79264, 99080, 175867, 198160, 351734, 396320, 703468, 879335, 1406936, 1758670, 2813872, 3517340, 5627744, 7034680, 14069360, 28138720]

約数ペア:

[(1, 28138720), (2, 14069360), (4, 7034680), (5, 5627744), (8, 3517340), (10, 2813872), (16, 1758670), (20, 1406936), (32, 879335), (40, 703468), (71, 396320), (80, 351734), (142, 198160), (160, 175867), (284, 99080), (355, 79264), (568, 49540), (710, 39632), (1136, 24770), (1420, 19816), (2272, 12385), (2477, 11360), (2840, 9908), (4954, 5680)]