201680945

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{401}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 263795616

約数和(自身を除く): 62114671

約数列:

[1, 5, 17, 61, 85, 97, 305, 401, 485, 1037, 1649, 2005, 5185, 5917, 6817, 8245, 24461, 29585, 34085, 38897, 100589, 122305, 194485, 415837, 502945, 661249, 2079185, 2372717, 3306245, 11863585, 40336189, 201680945]

約数ペア:

[(1, 201680945), (5, 40336189), (17, 11863585), (61, 3306245), (85, 2372717), (97, 2079185), (305, 661249), (401, 502945), (485, 415837), (1037, 194485), (1649, 122305), (2005, 100589), (5185, 38897), (5917, 34085), (6817, 29585), (8245, 24461)]