21031633870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{644549}}^1$

素因数の和:644820

約数の個数: 32

約数和(自身を含む): 40931503200

約数和(自身を除く): 19899869330

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 251, 502, 1255, 2510, 3263, 6526, 16315, 32630, 644549, 1289098, 3222745, 6445490, 8379137, 16758274, 41895685, 83791370, 161781799, 323563598, 808908995, 1617817990, 2103163387, 4206326774, 10515816935, 21031633870]

約数ペア:

[(1, 21031633870), (2, 10515816935), (5, 4206326774), (10, 2103163387), (13, 1617817990), (26, 808908995), (65, 323563598), (130, 161781799), (251, 83791370), (502, 41895685), (1255, 16758274), (2510, 8379137), (3263, 6445490), (6526, 3222745), (16315, 1289098), (32630, 644549)]