21556600

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8291}}^1$

素因数の和:8320

約数の個数: 48

約数和(自身を含む): 53980920

約数和(自身を除く): 32424320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 8291, 16582, 33164, 41455, 66328, 82910, 107783, 165820, 207275, 215566, 331640, 414550, 431132, 538915, 829100, 862264, 1077830, 1658200, 2155660, 2694575, 4311320, 5389150, 10778300, 21556600]

約数ペア:

[(1, 21556600), (2, 10778300), (4, 5389150), (5, 4311320), (8, 2694575), (10, 2155660), (13, 1658200), (20, 1077830), (25, 862264), (26, 829100), (40, 538915), (50, 431132), (52, 414550), (65, 331640), (100, 215566), (104, 207275), (130, 165820), (200, 107783), (260, 82910), (325, 66328), (520, 41455), (650, 33164), (1300, 16582), (2600, 8291)]