21909550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{911}}^1$

素因数の和:973

約数の個数: 48

約数和(自身を含む): 45122112

約数和(自身を除く): 23212562

約数列:

[1, 2, 5, 10, 13, 25, 26, 37, 50, 65, 74, 130, 185, 325, 370, 481, 650, 911, 925, 962, 1822, 1850, 2405, 4555, 4810, 9110, 11843, 12025, 22775, 23686, 24050, 33707, 45550, 59215, 67414, 118430, 168535, 296075, 337070, 438191, 592150, 842675, 876382, 1685350, 2190955, 4381910, 10954775, 21909550]

約数ペア:

[(1, 21909550), (2, 10954775), (5, 4381910), (10, 2190955), (13, 1685350), (25, 876382), (26, 842675), (37, 592150), (50, 438191), (65, 337070), (74, 296075), (130, 168535), (185, 118430), (325, 67414), (370, 59215), (481, 45550), (650, 33707), (911, 24050), (925, 23686), (962, 22775), (1822, 12025), (1850, 11843), (2405, 9110), (4555, 4810)]