18904810

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 38361600

約数和(自身を除く): 19456790

約数列:

[1, 2, 5, 10, 19, 29, 38, 47, 58, 73, 94, 95, 145, 146, 190, 235, 290, 365, 470, 551, 730, 893, 1102, 1363, 1387, 1786, 2117, 2726, 2755, 2774, 3431, 4234, 4465, 5510, 6815, 6862, 6935, 8930, 10585, 13630, 13870, 17155, 21170, 25897, 34310, 40223, 51794, 65189, 80446, 99499, 129485, 130378, 198998, 201115, 258970, 325945, 402230, 497495, 651890, 994990, 1890481, 3780962, 9452405, 18904810]

約数ペア:

[(1, 18904810), (2, 9452405), (5, 3780962), (10, 1890481), (19, 994990), (29, 651890), (38, 497495), (47, 402230), (58, 325945), (73, 258970), (94, 201115), (95, 198998), (145, 130378), (146, 129485), (190, 99499), (235, 80446), (290, 65189), (365, 51794), (470, 40223), (551, 34310), (730, 25897), (893, 21170), (1102, 17155), (1363, 13870), (1387, 13630), (1786, 10585), (2117, 8930), (2726, 6935), (2755, 6862), (2774, 6815), (3431, 5510), (4234, 4465)]