20170863

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:349

約数の個数: 40

約数和(自身を含む): 32292480

約数和(自身を除く): 12121617

約数列:

[1, 3, 9, 27, 29, 31, 81, 87, 93, 261, 277, 279, 783, 831, 837, 899, 2349, 2493, 2511, 2697, 7479, 8033, 8091, 8587, 22437, 24099, 24273, 25761, 72297, 72819, 77283, 216891, 231849, 249023, 650673, 695547, 747069, 2241207, 6723621, 20170863]

約数ペア:

[(1, 20170863), (3, 6723621), (9, 2241207), (27, 747069), (29, 695547), (31, 650673), (81, 249023), (87, 231849), (93, 216891), (261, 77283), (277, 72819), (279, 72297), (783, 25761), (831, 24273), (837, 24099), (899, 22437), (2349, 8587), (2493, 8091), (2511, 8033), (2697, 7479)]