21982125

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{73}}^2$

素因数の和:175

約数の個数: 48

約数和(自身を含む): 40457664

約数和(自身を除く): 18475539

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 73, 75, 125, 165, 219, 275, 365, 375, 803, 825, 1095, 1375, 1825, 2409, 4015, 4125, 5329, 5475, 9125, 12045, 15987, 20075, 26645, 27375, 58619, 60225, 79935, 100375, 133225, 175857, 293095, 301125, 399675, 666125, 879285, 1465475, 1998375, 4396425, 7327375, 21982125]

約数ペア:

[(1, 21982125), (3, 7327375), (5, 4396425), (11, 1998375), (15, 1465475), (25, 879285), (33, 666125), (55, 399675), (73, 301125), (75, 293095), (125, 175857), (165, 133225), (219, 100375), (275, 79935), (365, 60225), (375, 58619), (803, 27375), (825, 26645), (1095, 20075), (1375, 15987), (1825, 12045), (2409, 9125), (4015, 5475), (4125, 5329)]