81555540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4261}}^1$

素因数の和:4313

約数の個数: 96

約数和(自身を含む): 257765760

約数和(自身を除く): 176210220

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 29, 30, 33, 44, 55, 58, 60, 66, 87, 110, 116, 132, 145, 165, 174, 220, 290, 319, 330, 348, 435, 580, 638, 660, 870, 957, 1276, 1595, 1740, 1914, 3190, 3828, 4261, 4785, 6380, 8522, 9570, 12783, 17044, 19140, 21305, 25566, 42610, 46871, 51132, 63915, 85220, 93742, 123569, 127830, 140613, 187484, 234355, 247138, 255660, 281226, 370707, 468710, 494276, 562452, 617845, 703065, 741414, 937420, 1235690, 1359259, 1406130, 1482828, 1853535, 2471380, 2718518, 2812260, 3707070, 4077777, 5437036, 6796295, 7414140, 8155554, 13592590, 16311108, 20388885, 27185180, 40777770, 81555540]

約数ペア:

[(1, 81555540), (2, 40777770), (3, 27185180), (4, 20388885), (5, 16311108), (6, 13592590), (10, 8155554), (11, 7414140), (12, 6796295), (15, 5437036), (20, 4077777), (22, 3707070), (29, 2812260), (30, 2718518), (33, 2471380), (44, 1853535), (55, 1482828), (58, 1406130), (60, 1359259), (66, 1235690), (87, 937420), (110, 741414), (116, 703065), (132, 617845), (145, 562452), (165, 494276), (174, 468710), (220, 370707), (290, 281226), (319, 255660), (330, 247138), (348, 234355), (435, 187484), (580, 140613), (638, 127830), (660, 123569), (870, 93742), (957, 85220), (1276, 63915), (1595, 51132), (1740, 46871), (1914, 42610), (3190, 25566), (3828, 21305), (4261, 19140), (4785, 17044), (6380, 12783), (8522, 9570)]