20212509625

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2100001}}^1$

素因数の和:2100034

約数の個数: 32

約数和(自身を含む): 31449629952

約数和(自身を除く): 11237120327

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 125, 175, 275, 385, 875, 1375, 1925, 9625, 2100001, 10500005, 14700007, 23100011, 52500025, 73500035, 115500055, 161700077, 262500125, 367500175, 577500275, 808500385, 1837500875, 2887501375, 4042501925, 20212509625]

約数ペア:

[(1, 20212509625), (5, 4042501925), (7, 2887501375), (11, 1837500875), (25, 808500385), (35, 577500275), (55, 367500175), (77, 262500125), (125, 161700077), (175, 115500055), (275, 73500035), (385, 52500025), (875, 23100011), (1375, 14700007), (1925, 10500005), (9625, 2100001)]