20635209

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 37601280

約数和(自身を除く): 16966071

約数列:

[1, 3, 7, 9, 21, 23, 27, 47, 63, 69, 101, 141, 161, 189, 207, 303, 329, 423, 483, 621, 707, 909, 987, 1081, 1269, 1449, 2121, 2323, 2727, 2961, 3243, 4347, 4747, 6363, 6969, 7567, 8883, 9729, 14241, 16261, 19089, 20907, 22701, 29187, 33229, 42723, 48783, 62721, 68103, 99687, 109181, 128169, 146349, 204309, 299061, 327543, 439047, 764267, 897183, 982629, 2292801, 2947887, 6878403, 20635209]

約数ペア:

[(1, 20635209), (3, 6878403), (7, 2947887), (9, 2292801), (21, 982629), (23, 897183), (27, 764267), (47, 439047), (63, 327543), (69, 299061), (101, 204309), (141, 146349), (161, 128169), (189, 109181), (207, 99687), (303, 68103), (329, 62721), (423, 48783), (483, 42723), (621, 33229), (707, 29187), (909, 22701), (987, 20907), (1081, 19089), (1269, 16261), (1449, 14241), (2121, 9729), (2323, 8883), (2727, 7567), (2961, 6969), (3243, 6363), (4347, 4747)]