400436920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{24841}}^1$

素因数の和:24896

約数の個数: 64

約数和(自身を含む): 1001629440

約数和(自身を除く): 601192520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3224, 4030, 8060, 16120, 24841, 49682, 99364, 124205, 198728, 248410, 322933, 496820, 645866, 770071, 993640, 1291732, 1540142, 1614665, 2583464, 3080284, 3229330, 3850355, 6160568, 6458660, 7700710, 10010923, 12917320, 15401420, 20021846, 30802840, 40043692, 50054615, 80087384, 100109230, 200218460, 400436920]

約数ペア:

[(1, 400436920), (2, 200218460), (4, 100109230), (5, 80087384), (8, 50054615), (10, 40043692), (13, 30802840), (20, 20021846), (26, 15401420), (31, 12917320), (40, 10010923), (52, 7700710), (62, 6458660), (65, 6160568), (104, 3850355), (124, 3229330), (130, 3080284), (155, 2583464), (248, 1614665), (260, 1540142), (310, 1291732), (403, 993640), (520, 770071), (620, 645866), (806, 496820), (1240, 322933), (1612, 248410), (2015, 198728), (3224, 124205), (4030, 99364), (8060, 49682), (16120, 24841)]