81790515

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{983}}^1$

素因数の和:1080

約数の個数: 36

約数和(自身を含む): 145291536

約数和(自身を除く): 63501021

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 983, 1849, 1935, 2949, 4915, 5547, 8847, 9245, 14745, 16641, 27735, 42269, 44235, 83205, 126807, 211345, 380421, 634035, 1817567, 1902105, 5452701, 9087835, 16358103, 27263505, 81790515]

約数ペア:

[(1, 81790515), (3, 27263505), (5, 16358103), (9, 9087835), (15, 5452701), (43, 1902105), (45, 1817567), (129, 634035), (215, 380421), (387, 211345), (645, 126807), (983, 83205), (1849, 44235), (1935, 42269), (2949, 27735), (4915, 16641), (5547, 14745), (8847, 9245)]