19847984

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2579}}^1$

素因数の和:2637

約数の個数: 40

約数和(自身を含む): 42549360

約数和(自身を除く): 22701376

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 208, 296, 481, 592, 962, 1924, 2579, 3848, 5158, 7696, 10316, 20632, 33527, 41264, 67054, 95423, 134108, 190846, 268216, 381692, 536432, 763384, 1240499, 1526768, 2480998, 4961996, 9923992, 19847984]

約数ペア:

[(1, 19847984), (2, 9923992), (4, 4961996), (8, 2480998), (13, 1526768), (16, 1240499), (26, 763384), (37, 536432), (52, 381692), (74, 268216), (104, 190846), (148, 134108), (208, 95423), (296, 67054), (481, 41264), (592, 33527), (962, 20632), (1924, 10316), (2579, 7696), (3848, 5158)]