21005499120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{87522913}}^1$

素因数の和:87522929

約数の個数: 40

約数和(自身を含む): 65117048016

約数和(自身を除く): 44111548896

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 87522913, 175045826, 262568739, 350091652, 437614565, 525137478, 700183304, 875229130, 1050274956, 1312843695, 1400366608, 1750458260, 2100549912, 2625687390, 3500916520, 4201099824, 5251374780, 7001833040, 10502749560, 21005499120]

約数ペア:

[(1, 21005499120), (2, 10502749560), (3, 7001833040), (4, 5251374780), (5, 4201099824), (6, 3500916520), (8, 2625687390), (10, 2100549912), (12, 1750458260), (15, 1400366608), (16, 1312843695), (20, 1050274956), (24, 875229130), (30, 700183304), (40, 525137478), (48, 437614565), (60, 350091652), (80, 262568739), (120, 175045826), (240, 87522913)]