19553780

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 42517440

約数和(自身を除く): 22963660

約数列:

[1, 2, 4, 5, 10, 20, 59, 73, 118, 146, 227, 236, 292, 295, 365, 454, 590, 730, 908, 1135, 1180, 1460, 2270, 4307, 4540, 8614, 13393, 16571, 17228, 21535, 26786, 33142, 43070, 53572, 66284, 66965, 82855, 86140, 133930, 165710, 267860, 331420, 977689, 1955378, 3910756, 4888445, 9776890, 19553780]

約数ペア:

[(1, 19553780), (2, 9776890), (4, 4888445), (5, 3910756), (10, 1955378), (20, 977689), (59, 331420), (73, 267860), (118, 165710), (146, 133930), (227, 86140), (236, 82855), (292, 66965), (295, 66284), (365, 53572), (454, 43070), (590, 33142), (730, 26786), (908, 21535), (1135, 17228), (1180, 16571), (1460, 13393), (2270, 8614), (4307, 4540)]