20499605

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 29424384

約数和(自身を除く): 8924779

約数列:

[1, 5, 7, 35, 43, 53, 215, 257, 265, 301, 371, 1285, 1505, 1799, 1855, 2279, 8995, 11051, 11395, 13621, 15953, 55255, 68105, 77357, 79765, 95347, 386785, 476735, 585703, 2928515, 4099921, 20499605]

約数ペア:

[(1, 20499605), (5, 4099921), (7, 2928515), (35, 585703), (43, 476735), (53, 386785), (215, 95347), (257, 79765), (265, 77357), (301, 68105), (371, 55255), (1285, 15953), (1505, 13621), (1799, 11395), (1855, 11051), (2279, 8995)]