17918745

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2137}}^1$

素因数の和:2201

約数の個数: 32

約数和(自身を含む): 31608192

約数和(自身を除く): 13689447

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2137, 2795, 6411, 8385, 10685, 27781, 32055, 83343, 91891, 138905, 275673, 416715, 459455, 1194583, 1378365, 3583749, 5972915, 17918745]

約数ペア:

[(1, 17918745), (3, 5972915), (5, 3583749), (13, 1378365), (15, 1194583), (39, 459455), (43, 416715), (65, 275673), (129, 138905), (195, 91891), (215, 83343), (559, 32055), (645, 27781), (1677, 10685), (2137, 8385), (2795, 6411)]