31871900

素因数分解:

$2^2\times 5^2\times {\mathrm{67}}^2\times {\mathrm{71}}^1$

素因数の和:219

約数の個数: 54

約数和(自身を含む): 71198568

約数和(自身を除く): 39326668

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 67, 71, 100, 134, 142, 268, 284, 335, 355, 670, 710, 1340, 1420, 1675, 1775, 3350, 3550, 4489, 4757, 6700, 7100, 8978, 9514, 17956, 19028, 22445, 23785, 44890, 47570, 89780, 95140, 112225, 118925, 224450, 237850, 318719, 448900, 475700, 637438, 1274876, 1593595, 3187190, 6374380, 7967975, 15935950, 31871900]

約数ペア:

[(1, 31871900), (2, 15935950), (4, 7967975), (5, 6374380), (10, 3187190), (20, 1593595), (25, 1274876), (50, 637438), (67, 475700), (71, 448900), (100, 318719), (134, 237850), (142, 224450), (268, 118925), (284, 112225), (335, 95140), (355, 89780), (670, 47570), (710, 44890), (1340, 23785), (1420, 22445), (1675, 19028), (1775, 17956), (3350, 9514), (3550, 8978), (4489, 7100), (4757, 6700)]