21386722

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:466

約数の個数: 32

約数和(自身を含む): 37854720

約数和(自身を除く): 16467998

約数列:

[1, 2, 7, 14, 61, 79, 122, 158, 317, 427, 553, 634, 854, 1106, 2219, 4438, 4819, 9638, 19337, 25043, 33733, 38674, 50086, 67466, 135359, 175301, 270718, 350602, 1527623, 3055246, 10693361, 21386722]

約数ペア:

[(1, 21386722), (2, 10693361), (7, 3055246), (14, 1527623), (61, 350602), (79, 270718), (122, 175301), (158, 135359), (317, 67466), (427, 50086), (553, 38674), (634, 33733), (854, 25043), (1106, 19337), (2219, 9638), (4438, 4819)]