320520405

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{8209}}^1$

素因数の和:8373

約数の個数: 32

約数和(自身を含む): 543830400

約数和(自身を除く): 223309995

約数列:

[1, 3, 5, 15, 19, 57, 95, 137, 285, 411, 685, 2055, 2603, 7809, 8209, 13015, 24627, 39045, 41045, 123135, 155971, 467913, 779855, 1124633, 2339565, 3373899, 5623165, 16869495, 21368027, 64104081, 106840135, 320520405]

約数ペア:

[(1, 320520405), (3, 106840135), (5, 64104081), (15, 21368027), (19, 16869495), (57, 5623165), (95, 3373899), (137, 2339565), (285, 1124633), (411, 779855), (685, 467913), (2055, 155971), (2603, 123135), (7809, 41045), (8209, 39045), (13015, 24627)]