21372070

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52127}}^1$

素因数の和:52175

約数の個数: 16

約数和(自身を含む): 39408768

約数和(自身を除く): 18036698

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52127, 104254, 260635, 521270, 2137207, 4274414, 10686035, 21372070]

約数ペア:

[(1, 21372070), (2, 10686035), (5, 4274414), (10, 2137207), (41, 521270), (82, 260635), (205, 104254), (410, 52127)]