25320020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1621}}^1$

素因数の和:1712

約数の個数: 48

約数和(自身を含む): 58859136

約数和(自身を除く): 33539116

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 1621, 3124, 3242, 3905, 6484, 7810, 8105, 15620, 16210, 17831, 32420, 35662, 71324, 89155, 115091, 178310, 230182, 356620, 460364, 575455, 1150910, 1266001, 2301820, 2532002, 5064004, 6330005, 12660010, 25320020]

約数ペア:

[(1, 25320020), (2, 12660010), (4, 6330005), (5, 5064004), (10, 2532002), (11, 2301820), (20, 1266001), (22, 1150910), (44, 575455), (55, 460364), (71, 356620), (110, 230182), (142, 178310), (220, 115091), (284, 89155), (355, 71324), (710, 35662), (781, 32420), (1420, 17831), (1562, 16210), (1621, 15620), (3124, 8105), (3242, 7810), (3905, 6484)]