81865395

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{181}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 157007760

約数和(自身を除く): 75142365

約数列:

[1, 3, 5, 9, 15, 19, 23, 45, 57, 69, 95, 115, 171, 181, 207, 285, 345, 437, 529, 543, 855, 905, 1035, 1311, 1587, 1629, 2185, 2645, 2715, 3439, 3933, 4163, 4761, 6555, 7935, 8145, 10051, 10317, 12489, 17195, 19665, 20815, 23805, 30153, 30951, 37467, 50255, 51585, 62445, 79097, 90459, 95749, 150765, 154755, 187335, 237291, 287247, 395485, 452295, 478745, 711873, 861741, 1186455, 1436235, 1819231, 3559365, 4308705, 5457693, 9096155, 16373079, 27288465, 81865395]

約数ペア:

[(1, 81865395), (3, 27288465), (5, 16373079), (9, 9096155), (15, 5457693), (19, 4308705), (23, 3559365), (45, 1819231), (57, 1436235), (69, 1186455), (95, 861741), (115, 711873), (171, 478745), (181, 452295), (207, 395485), (285, 287247), (345, 237291), (437, 187335), (529, 154755), (543, 150765), (855, 95749), (905, 90459), (1035, 79097), (1311, 62445), (1587, 51585), (1629, 50255), (2185, 37467), (2645, 30951), (2715, 30153), (3439, 23805), (3933, 20815), (4163, 19665), (4761, 17195), (6555, 12489), (7935, 10317), (8145, 10051)]