18840910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{677}}^1$

素因数の和:729

約数の個数: 48

約数和(自身を含む): 38955168

約数和(自身を除く): 20114258

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 121, 230, 242, 253, 506, 605, 677, 1210, 1265, 1354, 2530, 2783, 3385, 5566, 6770, 7447, 13915, 14894, 15571, 27830, 31142, 37235, 74470, 77855, 81917, 155710, 163834, 171281, 342562, 409585, 819170, 856405, 1712810, 1884091, 3768182, 9420455, 18840910]

約数ペア:

[(1, 18840910), (2, 9420455), (5, 3768182), (10, 1884091), (11, 1712810), (22, 856405), (23, 819170), (46, 409585), (55, 342562), (110, 171281), (115, 163834), (121, 155710), (230, 81917), (242, 77855), (253, 74470), (506, 37235), (605, 31142), (677, 27830), (1210, 15571), (1265, 14894), (1354, 13915), (2530, 7447), (2783, 6770), (3385, 5566)]