198450890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{401}}^1\times {\mathrm{409}}^1$

素因数の和:839

約数の個数: 48

約数和(自身を含む): 394579080

約数和(自身を除く): 196128190

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 401, 409, 605, 802, 818, 1210, 2005, 2045, 4010, 4090, 4411, 4499, 8822, 8998, 22055, 22495, 44110, 44990, 48521, 49489, 97042, 98978, 164009, 242605, 247445, 328018, 485210, 494890, 820045, 1640090, 1804099, 3608198, 9020495, 18040990, 19845089, 39690178, 99225445, 198450890]

約数ペア:

[(1, 198450890), (2, 99225445), (5, 39690178), (10, 19845089), (11, 18040990), (22, 9020495), (55, 3608198), (110, 1804099), (121, 1640090), (242, 820045), (401, 494890), (409, 485210), (605, 328018), (802, 247445), (818, 242605), (1210, 164009), (2005, 98978), (2045, 97042), (4010, 49489), (4090, 48521), (4411, 44990), (4499, 44110), (8822, 22495), (8998, 22055)]