8640340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{257}}^1$

素因数の和:348

約数の個数: 36

約数和(自身を含む): 18670428

約数和(自身を除く): 10030088

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 257, 410, 514, 820, 1028, 1285, 1681, 2570, 3362, 5140, 6724, 8405, 10537, 16810, 21074, 33620, 42148, 52685, 105370, 210740, 432017, 864034, 1728068, 2160085, 4320170, 8640340]

約数ペア:

[(1, 8640340), (2, 4320170), (4, 2160085), (5, 1728068), (10, 864034), (20, 432017), (41, 210740), (82, 105370), (164, 52685), (205, 42148), (257, 33620), (410, 21074), (514, 16810), (820, 10537), (1028, 8405), (1285, 6724), (1681, 5140), (2570, 3362)]