81875560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8287}}^1$

素因数の和:8330

約数の個数: 64

約数和(自身を含む): 208857600

約数和(自身を除く): 126982040

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 4940, 8287, 9880, 16574, 33148, 41435, 66296, 82870, 107731, 157453, 165740, 215462, 314906, 331480, 430924, 538655, 629812, 787265, 861848, 1077310, 1259624, 1574530, 2046889, 2154620, 3149060, 4093778, 4309240, 6298120, 8187556, 10234445, 16375112, 20468890, 40937780, 81875560]

約数ペア:

[(1, 81875560), (2, 40937780), (4, 20468890), (5, 16375112), (8, 10234445), (10, 8187556), (13, 6298120), (19, 4309240), (20, 4093778), (26, 3149060), (38, 2154620), (40, 2046889), (52, 1574530), (65, 1259624), (76, 1077310), (95, 861848), (104, 787265), (130, 629812), (152, 538655), (190, 430924), (247, 331480), (260, 314906), (380, 215462), (494, 165740), (520, 157453), (760, 107731), (988, 82870), (1235, 66296), (1976, 41435), (2470, 33148), (4940, 16574), (8287, 9880)]