20216502625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{639257}}^1$

素因数の和:639306

約数の個数: 32

約数和(自身を含む): 28720583424

約数和(自身を除く): 8504080799

約数列:

[1, 5, 11, 23, 25, 55, 115, 125, 253, 275, 575, 1265, 1375, 2875, 6325, 31625, 639257, 3196285, 7031827, 14702911, 15981425, 35159135, 73514555, 79907125, 161732021, 175795675, 367572775, 808660105, 878978375, 1837863875, 4043300525, 20216502625]

約数ペア:

[(1, 20216502625), (5, 4043300525), (11, 1837863875), (23, 878978375), (25, 808660105), (55, 367572775), (115, 175795675), (125, 161732021), (253, 79907125), (275, 73514555), (575, 35159135), (1265, 15981425), (1375, 14702911), (2875, 7031827), (6325, 3196285), (31625, 639257)]