21641750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6659}}^1$

素因数の和:6689

約数の個数: 32

約数和(自身を含む): 43636320

約数和(自身を除く): 21994570

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6659, 13318, 33295, 66590, 86567, 166475, 173134, 332950, 432835, 832375, 865670, 1664750, 2164175, 4328350, 10820875, 21641750]

約数ペア:

[(1, 21641750), (2, 10820875), (5, 4328350), (10, 2164175), (13, 1664750), (25, 865670), (26, 832375), (50, 432835), (65, 332950), (125, 173134), (130, 166475), (250, 86567), (325, 66590), (650, 33295), (1625, 13318), (3250, 6659)]