20353749

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{229}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 30602880

約数和(自身を除く): 10249131

約数列:

[1, 3, 13, 39, 43, 53, 129, 159, 229, 559, 687, 689, 1677, 2067, 2279, 2977, 6837, 8931, 9847, 12137, 29541, 29627, 36411, 88881, 128011, 157781, 384033, 473343, 521891, 1565673, 6784583, 20353749]

約数ペア:

[(1, 20353749), (3, 6784583), (13, 1565673), (39, 521891), (43, 473343), (53, 384033), (129, 157781), (159, 128011), (229, 88881), (559, 36411), (687, 29627), (689, 29541), (1677, 12137), (2067, 9847), (2279, 8931), (2977, 6837)]