19519960

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2131}}^1$

素因数の和:2371

約数の個数: 32

約数和(自身を含む): 44132400

約数和(自身を除く): 24612440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2131, 2290, 4262, 4580, 8524, 9160, 10655, 17048, 21310, 42620, 85240, 487999, 975998, 1951996, 2439995, 3903992, 4879990, 9759980, 19519960]

約数ペア:

[(1, 19519960), (2, 9759980), (4, 4879990), (5, 3903992), (8, 2439995), (10, 1951996), (20, 975998), (40, 487999), (229, 85240), (458, 42620), (916, 21310), (1145, 17048), (1832, 10655), (2131, 9160), (2290, 8524), (4262, 4580)]