20565555

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{941}}^1$

素因数の和:1027

約数の個数: 32

約数和(自身を含む): 34725888

約数和(自身を除く): 14160333

約数列:

[1, 3, 5, 15, 31, 47, 93, 141, 155, 235, 465, 705, 941, 1457, 2823, 4371, 4705, 7285, 14115, 21855, 29171, 44227, 87513, 132681, 145855, 221135, 437565, 663405, 1371037, 4113111, 6855185, 20565555]

約数ペア:

[(1, 20565555), (3, 6855185), (5, 4113111), (15, 1371037), (31, 663405), (47, 437565), (93, 221135), (141, 145855), (155, 132681), (235, 87513), (465, 44227), (705, 29171), (941, 21855), (1457, 14115), (2823, 7285), (4371, 4705)]