18903830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{919}}^1$

素因数の和:965

約数の個数: 48

約数和(自身を含む): 39644640

約数和(自身を除く): 20740810

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 121, 170, 187, 242, 374, 605, 919, 935, 1210, 1838, 1870, 2057, 4114, 4595, 9190, 10109, 10285, 15623, 20218, 20570, 31246, 50545, 78115, 101090, 111199, 156230, 171853, 222398, 343706, 555995, 859265, 1111990, 1718530, 1890383, 3780766, 9451915, 18903830]

約数ペア:

[(1, 18903830), (2, 9451915), (5, 3780766), (10, 1890383), (11, 1718530), (17, 1111990), (22, 859265), (34, 555995), (55, 343706), (85, 222398), (110, 171853), (121, 156230), (170, 111199), (187, 101090), (242, 78115), (374, 50545), (605, 31246), (919, 20570), (935, 20218), (1210, 15623), (1838, 10285), (1870, 10109), (2057, 9190), (4114, 4595)]