81979190

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{3947}}^1$

素因数の和:4052

約数の個数: 32

約数和(自身を含む): 154635264

約数和(自身を除く): 72656074

約数列:

[1, 2, 5, 10, 31, 62, 67, 134, 155, 310, 335, 670, 2077, 3947, 4154, 7894, 10385, 19735, 20770, 39470, 122357, 244714, 264449, 528898, 611785, 1223570, 1322245, 2644490, 8197919, 16395838, 40989595, 81979190]

約数ペア:

[(1, 81979190), (2, 40989595), (5, 16395838), (10, 8197919), (31, 2644490), (62, 1322245), (67, 1223570), (134, 611785), (155, 528898), (310, 264449), (335, 244714), (670, 122357), (2077, 39470), (3947, 20770), (4154, 19735), (7894, 10385)]