81405142

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{19447}}^1$

素因数の和:19492

約数の個数: 32

約数和(自身を含む): 156828672

約数和(自身を除く): 75423530

約数列:

[1, 2, 7, 13, 14, 23, 26, 46, 91, 161, 182, 299, 322, 598, 2093, 4186, 19447, 38894, 136129, 252811, 272258, 447281, 505622, 894562, 1769677, 3130967, 3539354, 5814653, 6261934, 11629306, 40702571, 81405142]

約数ペア:

[(1, 81405142), (2, 40702571), (7, 11629306), (13, 6261934), (14, 5814653), (23, 3539354), (26, 3130967), (46, 1769677), (91, 894562), (161, 505622), (182, 447281), (299, 272258), (322, 252811), (598, 136129), (2093, 38894), (4186, 19447)]