81697725

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{15787}}^1$

素因数の和:15826

約数の個数: 36

約数和(自身を含む): 152701536

約数和(自身を除く): 71003811

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 5175, 15787, 47361, 78935, 142083, 236805, 363101, 394675, 710415, 1089303, 1184025, 1815505, 3267909, 3552075, 5446515, 9077525, 16339545, 27232575, 81697725]

約数ペア:

[(1, 81697725), (3, 27232575), (5, 16339545), (9, 9077525), (15, 5446515), (23, 3552075), (25, 3267909), (45, 1815505), (69, 1184025), (75, 1089303), (115, 710415), (207, 394675), (225, 363101), (345, 236805), (575, 142083), (1035, 78935), (1725, 47361), (5175, 15787)]