21357564

素因数分解:

$2^2\times 3^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 51246720

約数和(自身を除く): 29889156

約数列:

[1, 2, 3, 4, 6, 12, 61, 122, 163, 179, 183, 244, 326, 358, 366, 489, 537, 652, 716, 732, 978, 1074, 1956, 2148, 9943, 10919, 19886, 21838, 29177, 29829, 32757, 39772, 43676, 58354, 59658, 65514, 87531, 116708, 119316, 131028, 175062, 350124, 1779797, 3559594, 5339391, 7119188, 10678782, 21357564]

約数ペア:

[(1, 21357564), (2, 10678782), (3, 7119188), (4, 5339391), (6, 3559594), (12, 1779797), (61, 350124), (122, 175062), (163, 131028), (179, 119316), (183, 116708), (244, 87531), (326, 65514), (358, 59658), (366, 58354), (489, 43676), (537, 39772), (652, 32757), (716, 29829), (732, 29177), (978, 21838), (1074, 19886), (1956, 10919), (2148, 9943)]