21367684

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{433}}^1$

素因数の和:536

約数の個数: 36

約数和(自身を含む): 41140596

約数和(自身を除く): 19772912

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 169, 292, 338, 433, 676, 866, 949, 1732, 1898, 3796, 5629, 11258, 12337, 22516, 24674, 31609, 49348, 63218, 73177, 126436, 146354, 292708, 410917, 821834, 1643668, 5341921, 10683842, 21367684]

約数ペア:

[(1, 21367684), (2, 10683842), (4, 5341921), (13, 1643668), (26, 821834), (52, 410917), (73, 292708), (146, 146354), (169, 126436), (292, 73177), (338, 63218), (433, 49348), (676, 31609), (866, 24674), (949, 22516), (1732, 12337), (1898, 11258), (3796, 5629)]