1640579427

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{653357}}^1$

素因数の和:653400

約数の個数: 20

約数和(自身を含む): 2529802176

約数和(自身を除く): 889222749

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 653357, 1960071, 5880213, 17640639, 20254067, 52921917, 60762201, 182286603, 546859809, 1640579427]

約数ペア:

[(1, 1640579427), (3, 546859809), (9, 182286603), (27, 60762201), (31, 52921917), (81, 20254067), (93, 17640639), (279, 5880213), (837, 1960071), (2511, 653357)]