20654575

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2113}}^1$

素因数の和:2163

約数の個数: 24

約数和(自身を含む): 28310688

約数和(自身を除く): 7656113

約数列:

[1, 5, 17, 23, 25, 85, 115, 391, 425, 575, 1955, 2113, 9775, 10565, 35921, 48599, 52825, 179605, 242995, 826183, 898025, 1214975, 4130915, 20654575]

約数ペア:

[(1, 20654575), (5, 4130915), (17, 1214975), (23, 898025), (25, 826183), (85, 242995), (115, 179605), (391, 52825), (425, 48599), (575, 35921), (1955, 10565), (2113, 9775)]