21218730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1327}}^1$

素因数の和:1391

約数の個数: 64

約数和(自身を含む): 56222208

約数和(自身を除く): 35003478

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 41, 65, 78, 82, 123, 130, 195, 205, 246, 390, 410, 533, 615, 1066, 1230, 1327, 1599, 2654, 2665, 3198, 3981, 5330, 6635, 7962, 7995, 13270, 15990, 17251, 19905, 34502, 39810, 51753, 54407, 86255, 103506, 108814, 163221, 172510, 258765, 272035, 326442, 517530, 544070, 707291, 816105, 1414582, 1632210, 2121873, 3536455, 4243746, 7072910, 10609365, 21218730]

約数ペア:

[(1, 21218730), (2, 10609365), (3, 7072910), (5, 4243746), (6, 3536455), (10, 2121873), (13, 1632210), (15, 1414582), (26, 816105), (30, 707291), (39, 544070), (41, 517530), (65, 326442), (78, 272035), (82, 258765), (123, 172510), (130, 163221), (195, 108814), (205, 103506), (246, 86255), (390, 54407), (410, 51753), (533, 39810), (615, 34502), (1066, 19905), (1230, 17251), (1327, 15990), (1599, 13270), (2654, 7995), (2665, 7962), (3198, 6635), (3981, 5330)]