20512421680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15082663}}^1$

素因数の和:15082693

約数の個数: 40

約数和(自身を含む): 50496759072

約数和(自身を除く): 29984337392

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15082663, 30165326, 60330652, 75413315, 120661304, 150826630, 241322608, 256405271, 301653260, 512810542, 603306520, 1025621084, 1206613040, 1282026355, 2051242168, 2564052710, 4102484336, 5128105420, 10256210840, 20512421680]

約数ペア:

[(1, 20512421680), (2, 10256210840), (4, 5128105420), (5, 4102484336), (8, 2564052710), (10, 2051242168), (16, 1282026355), (17, 1206613040), (20, 1025621084), (34, 603306520), (40, 512810542), (68, 301653260), (80, 256405271), (85, 241322608), (136, 150826630), (170, 120661304), (272, 75413315), (340, 60330652), (680, 30165326), (1360, 15082663)]