221537520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{307691}}^1$

素因数の和:307710

約数の個数: 60

約数和(自身を含む): 743999256

約数和(自身を除く): 522461736

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 307691, 615382, 923073, 1230764, 1538455, 1846146, 2461528, 2769219, 3076910, 3692292, 4615365, 4923056, 5538438, 6153820, 7384584, 9230730, 11076876, 12307640, 13846095, 14769168, 18461460, 22153752, 24615280, 27692190, 36922920, 44307504, 55384380, 73845840, 110768760, 221537520]

約数ペア:

[(1, 221537520), (2, 110768760), (3, 73845840), (4, 55384380), (5, 44307504), (6, 36922920), (8, 27692190), (9, 24615280), (10, 22153752), (12, 18461460), (15, 14769168), (16, 13846095), (18, 12307640), (20, 11076876), (24, 9230730), (30, 7384584), (36, 6153820), (40, 5538438), (45, 4923056), (48, 4615365), (60, 3692292), (72, 3076910), (80, 2769219), (90, 2461528), (120, 1846146), (144, 1538455), (180, 1230764), (240, 923073), (360, 615382), (720, 307691)]