18777790

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{887}}^1$

素因数の和:996

約数の個数: 32

約数和(自身を含む): 35484480

約数和(自身を除く): 16706690

約数列:

[1, 2, 5, 10, 29, 58, 73, 145, 146, 290, 365, 730, 887, 1774, 2117, 4234, 4435, 8870, 10585, 21170, 25723, 51446, 64751, 128615, 129502, 257230, 323755, 647510, 1877779, 3755558, 9388895, 18777790]

約数ペア:

[(1, 18777790), (2, 9388895), (5, 3755558), (10, 1877779), (29, 647510), (58, 323755), (73, 257230), (145, 129502), (146, 128615), (290, 64751), (365, 51446), (730, 25723), (887, 21170), (1774, 10585), (2117, 8870), (4234, 4435)]