21082572

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:452

約数の個数: 96

約数和(自身を含む): 63436800

約数和(自身を除く): 42354228

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 79, 84, 108, 126, 158, 189, 237, 252, 316, 353, 378, 474, 553, 706, 711, 756, 948, 1059, 1106, 1412, 1422, 1659, 2118, 2133, 2212, 2471, 2844, 3177, 3318, 4236, 4266, 4942, 4977, 6354, 6636, 7413, 8532, 9531, 9884, 9954, 12708, 14826, 14931, 19062, 19908, 22239, 27887, 29652, 29862, 38124, 44478, 55774, 59724, 66717, 83661, 88956, 111548, 133434, 167322, 195209, 250983, 266868, 334644, 390418, 501966, 585627, 752949, 780836, 1003932, 1171254, 1505898, 1756881, 2342508, 3011796, 3513762, 5270643, 7027524, 10541286, 21082572]

約数ペア:

[(1, 21082572), (2, 10541286), (3, 7027524), (4, 5270643), (6, 3513762), (7, 3011796), (9, 2342508), (12, 1756881), (14, 1505898), (18, 1171254), (21, 1003932), (27, 780836), (28, 752949), (36, 585627), (42, 501966), (54, 390418), (63, 334644), (79, 266868), (84, 250983), (108, 195209), (126, 167322), (158, 133434), (189, 111548), (237, 88956), (252, 83661), (316, 66717), (353, 59724), (378, 55774), (474, 44478), (553, 38124), (706, 29862), (711, 29652), (756, 27887), (948, 22239), (1059, 19908), (1106, 19062), (1412, 14931), (1422, 14826), (1659, 12708), (2118, 9954), (2133, 9884), (2212, 9531), (2471, 8532), (2844, 7413), (3177, 6636), (3318, 6354), (4236, 4977), (4266, 4942)]