156986980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{277}}^1\times {\mathrm{659}}^1$

素因数の和:988

約数の個数: 48

約数和(自身を含む): 339071040

約数和(自身を除く): 182084060

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 277, 430, 554, 659, 860, 1108, 1318, 1385, 2636, 2770, 3295, 5540, 6590, 11911, 13180, 23822, 28337, 47644, 56674, 59555, 113348, 119110, 141685, 182543, 238220, 283370, 365086, 566740, 730172, 912715, 1825430, 3650860, 7849349, 15698698, 31397396, 39246745, 78493490, 156986980]

約数ペア:

[(1, 156986980), (2, 78493490), (4, 39246745), (5, 31397396), (10, 15698698), (20, 7849349), (43, 3650860), (86, 1825430), (172, 912715), (215, 730172), (277, 566740), (430, 365086), (554, 283370), (659, 238220), (860, 182543), (1108, 141685), (1318, 119110), (1385, 113348), (2636, 59555), (2770, 56674), (3295, 47644), (5540, 28337), (6590, 23822), (11911, 13180)]