19905730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8059}}^1$

素因数の和:8098

約数の個数: 32

約数和(自身を含む): 40622400

約数和(自身を除く): 20716670

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8059, 16118, 40295, 80590, 104767, 153121, 209534, 306242, 523835, 765605, 1047670, 1531210, 1990573, 3981146, 9952865, 19905730]

約数ペア:

[(1, 19905730), (2, 9952865), (5, 3981146), (10, 1990573), (13, 1531210), (19, 1047670), (26, 765605), (38, 523835), (65, 306242), (95, 209534), (130, 153121), (190, 104767), (247, 80590), (494, 40295), (1235, 16118), (2470, 8059)]