161491865

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{971}}^1$

素因数の和:1073

約数の個数: 32

約数和(自身を含む): 212751360

約数和(自身を除く): 51259495

約数列:

[1, 5, 29, 31, 37, 145, 155, 185, 899, 971, 1073, 1147, 4495, 4855, 5365, 5735, 28159, 30101, 33263, 35927, 140795, 150505, 166315, 179635, 872929, 1041883, 1113737, 4364645, 5209415, 5568685, 32298373, 161491865]

約数ペア:

[(1, 161491865), (5, 32298373), (29, 5568685), (31, 5209415), (37, 4364645), (145, 1113737), (155, 1041883), (185, 872929), (899, 179635), (971, 166315), (1073, 150505), (1147, 140795), (4495, 35927), (4855, 33263), (5365, 30101), (5735, 28159)]