18742990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1319}}^1$

素因数の和:1369

約数の個数: 48

約数和(自身を含む): 40629600

約数和(自身を除く): 21886610

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 49, 58, 70, 98, 145, 203, 245, 290, 406, 490, 1015, 1319, 1421, 2030, 2638, 2842, 6595, 7105, 9233, 13190, 14210, 18466, 38251, 46165, 64631, 76502, 92330, 129262, 191255, 267757, 323155, 382510, 535514, 646310, 1338785, 1874299, 2677570, 3748598, 9371495, 18742990]

約数ペア:

[(1, 18742990), (2, 9371495), (5, 3748598), (7, 2677570), (10, 1874299), (14, 1338785), (29, 646310), (35, 535514), (49, 382510), (58, 323155), (70, 267757), (98, 191255), (145, 129262), (203, 92330), (245, 76502), (290, 64631), (406, 46165), (490, 38251), (1015, 18466), (1319, 14210), (1421, 13190), (2030, 9233), (2638, 7105), (2842, 6595)]