21879100

素因数分解:

$2^2\times 5^2\times {\mathrm{331}}^1\times {\mathrm{661}}^1$

素因数の和:1006

約数の個数: 36

約数和(自身を含む): 47693128

約数和(自身を除く): 25814028

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 331, 661, 662, 1322, 1324, 1655, 2644, 3305, 3310, 6610, 6620, 8275, 13220, 16525, 16550, 33050, 33100, 66100, 218791, 437582, 875164, 1093955, 2187910, 4375820, 5469775, 10939550, 21879100]

約数ペア:

[(1, 21879100), (2, 10939550), (4, 5469775), (5, 4375820), (10, 2187910), (20, 1093955), (25, 875164), (50, 437582), (100, 218791), (331, 66100), (661, 33100), (662, 33050), (1322, 16550), (1324, 16525), (1655, 13220), (2644, 8275), (3305, 6620), (3310, 6610)]