18981578

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{233}}^1$

素因数の和:299

約数の個数: 48

約数和(自身を含む): 37267776

約数和(自身を除く): 18286198

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 77, 154, 161, 233, 253, 322, 466, 506, 529, 1058, 1631, 1771, 2563, 3262, 3542, 3703, 5126, 5359, 5819, 7406, 10718, 11638, 17941, 35882, 37513, 40733, 58949, 75026, 81466, 117898, 123257, 246514, 412643, 825286, 862799, 1355827, 1725598, 2711654, 9490789, 18981578]

約数ペア:

[(1, 18981578), (2, 9490789), (7, 2711654), (11, 1725598), (14, 1355827), (22, 862799), (23, 825286), (46, 412643), (77, 246514), (154, 123257), (161, 117898), (233, 81466), (253, 75026), (322, 58949), (466, 40733), (506, 37513), (529, 35882), (1058, 17941), (1631, 11638), (1771, 10718), (2563, 7406), (3262, 5819), (3542, 5359), (3703, 5126)]