21874138

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:463

約数の個数: 48

約数和(自身を含む): 41224680

約数和(自身を除く): 19350542

約数列:

[1, 2, 11, 13, 17, 22, 26, 34, 121, 143, 187, 221, 242, 286, 374, 409, 442, 818, 1573, 2057, 2431, 3146, 4114, 4499, 4862, 5317, 6953, 8998, 10634, 13906, 26741, 49489, 53482, 58487, 76483, 90389, 98978, 116974, 152966, 180778, 643357, 841313, 994279, 1286714, 1682626, 1988558, 10937069, 21874138]

約数ペア:

[(1, 21874138), (2, 10937069), (11, 1988558), (13, 1682626), (17, 1286714), (22, 994279), (26, 841313), (34, 643357), (121, 180778), (143, 152966), (187, 116974), (221, 98978), (242, 90389), (286, 76483), (374, 58487), (409, 53482), (442, 49489), (818, 26741), (1573, 13906), (2057, 10634), (2431, 8998), (3146, 6953), (4114, 5317), (4499, 4862)]