21117964

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9547}}^1$

素因数の和:9637

約数の個数: 24

約数和(自身を含む): 42775040

約数和(自身を除く): 21657076

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9547, 19094, 38188, 66829, 133658, 267316, 754213, 1508426, 3016852, 5279491, 10558982, 21117964]

約数ペア:

[(1, 21117964), (2, 10558982), (4, 5279491), (7, 3016852), (14, 1508426), (28, 754213), (79, 267316), (158, 133658), (316, 66829), (553, 38188), (1106, 19094), (2212, 9547)]