20571572

素因数分解:

$2^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{1019}}^1$

素因数の和:1140

約数の個数: 36

約数和(自身を含む): 42325920

約数和(自身を除く): 21754348

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 103, 196, 206, 412, 721, 1019, 1442, 2038, 2884, 4076, 5047, 7133, 10094, 14266, 20188, 28532, 49931, 99862, 104957, 199724, 209914, 419828, 734699, 1469398, 2938796, 5142893, 10285786, 20571572]

約数ペア:

[(1, 20571572), (2, 10285786), (4, 5142893), (7, 2938796), (14, 1469398), (28, 734699), (49, 419828), (98, 209914), (103, 199724), (196, 104957), (206, 99862), (412, 49931), (721, 28532), (1019, 20188), (1442, 14266), (2038, 10094), (2884, 7133), (4076, 5047)]