81177220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{421}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 176956416

約数和(自身を除く): 95779196

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 311, 421, 620, 622, 842, 1244, 1555, 1684, 2105, 3110, 4210, 6220, 8420, 9641, 13051, 19282, 26102, 38564, 48205, 52204, 65255, 96410, 130510, 130931, 192820, 261020, 261862, 523724, 654655, 1309310, 2618620, 4058861, 8117722, 16235444, 20294305, 40588610, 81177220]

約数ペア:

[(1, 81177220), (2, 40588610), (4, 20294305), (5, 16235444), (10, 8117722), (20, 4058861), (31, 2618620), (62, 1309310), (124, 654655), (155, 523724), (310, 261862), (311, 261020), (421, 192820), (620, 130931), (622, 130510), (842, 96410), (1244, 65255), (1555, 52204), (1684, 48205), (2105, 38564), (3110, 26102), (4210, 19282), (6220, 13051), (8420, 9641)]