81551580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:320

約数の個数: 144

約数和(自身を含む): 257402880

約数和(自身を除く): 175851300

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 47, 55, 60, 66, 94, 110, 121, 132, 141, 165, 188, 220, 235, 239, 242, 282, 330, 363, 470, 478, 484, 517, 564, 605, 660, 705, 717, 726, 940, 956, 1034, 1195, 1210, 1410, 1434, 1452, 1551, 1815, 2068, 2390, 2420, 2585, 2629, 2820, 2868, 3102, 3585, 3630, 4780, 5170, 5258, 5687, 6204, 7170, 7260, 7755, 7887, 10340, 10516, 11233, 11374, 13145, 14340, 15510, 15774, 17061, 22466, 22748, 26290, 28435, 28919, 31020, 31548, 33699, 34122, 39435, 44932, 52580, 56165, 56870, 57838, 67398, 68244, 78870, 85305, 86757, 112330, 113740, 115676, 123563, 134796, 144595, 157740, 168495, 170610, 173514, 224660, 247126, 289190, 336990, 341220, 347028, 370689, 433785, 494252, 578380, 617815, 673980, 741378, 867570, 1235630, 1359193, 1482756, 1735140, 1853445, 2471260, 2718386, 3706890, 4077579, 5436772, 6795965, 7413780, 8155158, 13591930, 16310316, 20387895, 27183860, 40775790, 81551580]

約数ペア:

[(1, 81551580), (2, 40775790), (3, 27183860), (4, 20387895), (5, 16310316), (6, 13591930), (10, 8155158), (11, 7413780), (12, 6795965), (15, 5436772), (20, 4077579), (22, 3706890), (30, 2718386), (33, 2471260), (44, 1853445), (47, 1735140), (55, 1482756), (60, 1359193), (66, 1235630), (94, 867570), (110, 741378), (121, 673980), (132, 617815), (141, 578380), (165, 494252), (188, 433785), (220, 370689), (235, 347028), (239, 341220), (242, 336990), (282, 289190), (330, 247126), (363, 224660), (470, 173514), (478, 170610), (484, 168495), (517, 157740), (564, 144595), (605, 134796), (660, 123563), (705, 115676), (717, 113740), (726, 112330), (940, 86757), (956, 85305), (1034, 78870), (1195, 68244), (1210, 67398), (1410, 57838), (1434, 56870), (1452, 56165), (1551, 52580), (1815, 44932), (2068, 39435), (2390, 34122), (2420, 33699), (2585, 31548), (2629, 31020), (2820, 28919), (2868, 28435), (3102, 26290), (3585, 22748), (3630, 22466), (4780, 17061), (5170, 15774), (5258, 15510), (5687, 14340), (6204, 13145), (7170, 11374), (7260, 11233), (7755, 10516), (7887, 10340)]