25021820

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 54286848

約数和(自身を除く): 29265028

約数列:

[1, 2, 4, 5, 10, 20, 67, 71, 134, 142, 263, 268, 284, 335, 355, 526, 670, 710, 1052, 1315, 1340, 1420, 2630, 4757, 5260, 9514, 17621, 18673, 19028, 23785, 35242, 37346, 47570, 70484, 74692, 88105, 93365, 95140, 176210, 186730, 352420, 373460, 1251091, 2502182, 5004364, 6255455, 12510910, 25021820]

約数ペア:

[(1, 25021820), (2, 12510910), (4, 6255455), (5, 5004364), (10, 2502182), (20, 1251091), (67, 373460), (71, 352420), (134, 186730), (142, 176210), (263, 95140), (268, 93365), (284, 88105), (335, 74692), (355, 70484), (526, 47570), (670, 37346), (710, 35242), (1052, 23785), (1315, 19028), (1340, 18673), (1420, 17621), (2630, 9514), (4757, 5260)]