21411291

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 32440320

約数和(自身を除く): 11029029

約数列:

[1, 3, 11, 33, 43, 79, 129, 191, 237, 473, 573, 869, 1419, 2101, 2607, 3397, 6303, 8213, 10191, 15089, 24639, 37367, 45267, 90343, 112101, 165979, 271029, 497937, 648827, 1946481, 7137097, 21411291]

約数ペア:

[(1, 21411291), (3, 7137097), (11, 1946481), (33, 648827), (43, 497937), (79, 271029), (129, 165979), (191, 112101), (237, 90343), (473, 45267), (573, 37367), (869, 24639), (1419, 15089), (2101, 10191), (2607, 8213), (3397, 6303)]