81380270

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{3323}}^1$

素因数の和:3440

約数の個数: 32

約数和(自身を含む): 153169920

約数和(自身を除く): 71789650

約数列:

[1, 2, 5, 10, 31, 62, 79, 155, 158, 310, 395, 790, 2449, 3323, 4898, 6646, 12245, 16615, 24490, 33230, 103013, 206026, 262517, 515065, 525034, 1030130, 1312585, 2625170, 8138027, 16276054, 40690135, 81380270]

約数ペア:

[(1, 81380270), (2, 40690135), (5, 16276054), (10, 8138027), (31, 2625170), (62, 1312585), (79, 1030130), (155, 525034), (158, 515065), (310, 262517), (395, 206026), (790, 103013), (2449, 33230), (3323, 24490), (4898, 16615), (6646, 12245)]