287142020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{7211}}^1$

素因数の和:7412

約数の個数: 48

約数和(自身を含む): 661542336

約数和(自身を除く): 374400316

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 181, 220, 362, 724, 905, 1810, 1991, 3620, 3982, 7211, 7964, 9955, 14422, 19910, 28844, 36055, 39820, 72110, 79321, 144220, 158642, 317284, 396605, 793210, 1305191, 1586420, 2610382, 5220764, 6525955, 13051910, 14357101, 26103820, 28714202, 57428404, 71785505, 143571010, 287142020]

約数ペア:

[(1, 287142020), (2, 143571010), (4, 71785505), (5, 57428404), (10, 28714202), (11, 26103820), (20, 14357101), (22, 13051910), (44, 6525955), (55, 5220764), (110, 2610382), (181, 1586420), (220, 1305191), (362, 793210), (724, 396605), (905, 317284), (1810, 158642), (1991, 144220), (3620, 79321), (3982, 72110), (7211, 39820), (7964, 36055), (9955, 28844), (14422, 19910)]