21403886

素因数分解:

$2^1\times 7^3\times {\mathrm{41}}^1\times {\mathrm{761}}^1$

素因数の和:825

約数の個数: 32

約数和(自身を含む): 38404800

約数和(自身を除く): 17000914

約数列:

[1, 2, 7, 14, 41, 49, 82, 98, 287, 343, 574, 686, 761, 1522, 2009, 4018, 5327, 10654, 14063, 28126, 31201, 37289, 62402, 74578, 218407, 261023, 436814, 522046, 1528849, 3057698, 10701943, 21403886]

約数ペア:

[(1, 21403886), (2, 10701943), (7, 3057698), (14, 1528849), (41, 522046), (49, 436814), (82, 261023), (98, 218407), (287, 74578), (343, 62402), (574, 37289), (686, 31201), (761, 28126), (1522, 14063), (2009, 10654), (4018, 5327)]