12991420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1723}}^1$

素因数の和:1774

約数の個数: 48

約数和(自身を含む): 30411360

約数和(自身を除く): 17419940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1723, 1885, 3446, 3770, 6892, 7540, 8615, 17230, 22399, 34460, 44798, 49967, 89596, 99934, 111995, 199868, 223990, 249835, 447980, 499670, 649571, 999340, 1299142, 2598284, 3247855, 6495710, 12991420]

約数ペア:

[(1, 12991420), (2, 6495710), (4, 3247855), (5, 2598284), (10, 1299142), (13, 999340), (20, 649571), (26, 499670), (29, 447980), (52, 249835), (58, 223990), (65, 199868), (116, 111995), (130, 99934), (145, 89596), (260, 49967), (290, 44798), (377, 34460), (580, 22399), (754, 17230), (1508, 8615), (1723, 7540), (1885, 6892), (3446, 3770)]