21559100

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2729}}^1$

素因数の和:2822

約数の個数: 36

約数和(自身を含む): 47392800

約数和(自身を除く): 25833700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2729, 3950, 5458, 7900, 10916, 13645, 27290, 54580, 68225, 136450, 215591, 272900, 431182, 862364, 1077955, 2155910, 4311820, 5389775, 10779550, 21559100]

約数ペア:

[(1, 21559100), (2, 10779550), (4, 5389775), (5, 4311820), (10, 2155910), (20, 1077955), (25, 862364), (50, 431182), (79, 272900), (100, 215591), (158, 136450), (316, 68225), (395, 54580), (790, 27290), (1580, 13645), (1975, 10916), (2729, 7900), (3950, 5458)]