2157398375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{709}}^1\times {\mathrm{2213}}^1$

素因数の和:2948

約数の個数: 32

約数和(自身を含む): 2942671680

約数和(自身を除く): 785273305

約数列:

[1, 5, 11, 25, 55, 125, 275, 709, 1375, 2213, 3545, 7799, 11065, 17725, 24343, 38995, 55325, 88625, 121715, 194975, 276625, 608575, 974875, 1569017, 3042875, 7845085, 17259187, 39225425, 86295935, 196127125, 431479675, 2157398375]

約数ペア:

[(1, 2157398375), (5, 431479675), (11, 196127125), (25, 86295935), (55, 39225425), (125, 17259187), (275, 7845085), (709, 3042875), (1375, 1569017), (2213, 974875), (3545, 608575), (7799, 276625), (11065, 194975), (17725, 121715), (24343, 88625), (38995, 55325)]