20651290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:319

約数の個数: 64

約数和(自身を含む): 43908480

約数和(自身を除く): 23257190

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 41, 55, 82, 95, 110, 190, 205, 209, 241, 410, 418, 451, 482, 779, 902, 1045, 1205, 1558, 2090, 2255, 2410, 2651, 3895, 4510, 4579, 5302, 7790, 8569, 9158, 9881, 13255, 17138, 19762, 22895, 26510, 42845, 45790, 49405, 50369, 85690, 98810, 100738, 108691, 187739, 217382, 251845, 375478, 503690, 543455, 938695, 1086910, 1877390, 2065129, 4130258, 10325645, 20651290]

約数ペア:

[(1, 20651290), (2, 10325645), (5, 4130258), (10, 2065129), (11, 1877390), (19, 1086910), (22, 938695), (38, 543455), (41, 503690), (55, 375478), (82, 251845), (95, 217382), (110, 187739), (190, 108691), (205, 100738), (209, 98810), (241, 85690), (410, 50369), (418, 49405), (451, 45790), (482, 42845), (779, 26510), (902, 22895), (1045, 19762), (1205, 17138), (1558, 13255), (2090, 9881), (2255, 9158), (2410, 8569), (2651, 7790), (3895, 5302), (4510, 4579)]