420912140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{26947}}^1$

素因数の和:27038

約数の個数: 48

約数和(自身を含む): 977889024

約数和(自身を除く): 556976884

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 3124, 3905, 7810, 15620, 26947, 53894, 107788, 134735, 269470, 296417, 538940, 592834, 1185668, 1482085, 1913237, 2964170, 3826474, 5928340, 7652948, 9566185, 19132370, 21045607, 38264740, 42091214, 84182428, 105228035, 210456070, 420912140]

約数ペア:

[(1, 420912140), (2, 210456070), (4, 105228035), (5, 84182428), (10, 42091214), (11, 38264740), (20, 21045607), (22, 19132370), (44, 9566185), (55, 7652948), (71, 5928340), (110, 3826474), (142, 2964170), (220, 1913237), (284, 1482085), (355, 1185668), (710, 592834), (781, 538940), (1420, 296417), (1562, 269470), (3124, 134735), (3905, 107788), (7810, 53894), (15620, 26947)]