21627500

素因数分解:

$2^2\times 5^4\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:276

約数の個数: 60

約数和(自身を含む): 48678168

約数和(自身を除く): 27050668

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 211, 250, 410, 422, 500, 625, 820, 844, 1025, 1055, 1250, 2050, 2110, 2500, 4100, 4220, 5125, 5275, 8651, 10250, 10550, 17302, 20500, 21100, 25625, 26375, 34604, 43255, 51250, 52750, 86510, 102500, 105500, 131875, 173020, 216275, 263750, 432550, 527500, 865100, 1081375, 2162750, 4325500, 5406875, 10813750, 21627500]

約数ペア:

[(1, 21627500), (2, 10813750), (4, 5406875), (5, 4325500), (10, 2162750), (20, 1081375), (25, 865100), (41, 527500), (50, 432550), (82, 263750), (100, 216275), (125, 173020), (164, 131875), (205, 105500), (211, 102500), (250, 86510), (410, 52750), (422, 51250), (500, 43255), (625, 34604), (820, 26375), (844, 25625), (1025, 21100), (1055, 20500), (1250, 17302), (2050, 10550), (2110, 10250), (2500, 8651), (4100, 5275), (4220, 5125)]