21581812

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{14543}}^1$

素因数の和:14607

約数の個数: 24

約数和(自身を含む): 43981056

約数和(自身を除く): 22399244

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 14543, 29086, 58172, 101801, 203602, 407204, 770779, 1541558, 3083116, 5395453, 10790906, 21581812]

約数ペア:

[(1, 21581812), (2, 10790906), (4, 5395453), (7, 3083116), (14, 1541558), (28, 770779), (53, 407204), (106, 203602), (212, 101801), (371, 58172), (742, 29086), (1484, 14543)]