256400019

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{3797}}^1$

素因数の和:3908

約数の個数: 32

約数和(自身を含む): 395599680

約数和(自身を除く): 139199661

約数列:

[1, 3, 9, 27, 41, 61, 123, 183, 369, 549, 1107, 1647, 2501, 3797, 7503, 11391, 22509, 34173, 67527, 102519, 155677, 231617, 467031, 694851, 1401093, 2084553, 4203279, 6253659, 9496297, 28488891, 85466673, 256400019]

約数ペア:

[(1, 256400019), (3, 85466673), (9, 28488891), (27, 9496297), (41, 6253659), (61, 4203279), (123, 2084553), (183, 1401093), (369, 694851), (549, 467031), (1107, 231617), (1647, 155677), (2501, 102519), (3797, 67527), (7503, 34173), (11391, 22509)]