81945865

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:417

約数の個数: 32

約数和(自身を含む): 108739584

約数和(自身を除く): 26793719

約数列:

[1, 5, 17, 31, 85, 137, 155, 227, 527, 685, 1135, 2329, 2635, 3859, 4247, 7037, 11645, 19295, 21235, 31099, 35185, 72199, 119629, 155495, 360995, 528683, 598145, 964069, 2643415, 4820345, 16389173, 81945865]

約数ペア:

[(1, 81945865), (5, 16389173), (17, 4820345), (31, 2643415), (85, 964069), (137, 598145), (155, 528683), (227, 360995), (527, 155495), (685, 119629), (1135, 72199), (2329, 35185), (2635, 31099), (3859, 21235), (4247, 19295), (7037, 11645)]