1621345880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{16981}}^1$

素因数の和:17041

約数の個数: 128

約数和(自身を含む): 4695183360

約数和(自身を除く): 3073837480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 31, 35, 40, 44, 55, 56, 62, 70, 77, 88, 110, 124, 140, 154, 155, 217, 220, 248, 280, 308, 310, 341, 385, 434, 440, 616, 620, 682, 770, 868, 1085, 1240, 1364, 1540, 1705, 1736, 2170, 2387, 2728, 3080, 3410, 4340, 4774, 6820, 8680, 9548, 11935, 13640, 16981, 19096, 23870, 33962, 47740, 67924, 84905, 95480, 118867, 135848, 169810, 186791, 237734, 339620, 373582, 475468, 526411, 594335, 679240, 747164, 933955, 950936, 1052822, 1188670, 1307537, 1494328, 1867910, 2105644, 2377340, 2615074, 2632055, 3684877, 3735820, 4211288, 4754680, 5230148, 5264110, 5790521, 6537685, 7369754, 7471640, 10460296, 10528220, 11581042, 13075370, 14739508, 18424385, 21056440, 23162084, 26150740, 28952605, 29479016, 36848770, 40533647, 46324168, 52301480, 57905210, 73697540, 81067294, 115810420, 147395080, 162134588, 202668235, 231620840, 324269176, 405336470, 810672940, 1621345880]

約数ペア:

[(1, 1621345880), (2, 810672940), (4, 405336470), (5, 324269176), (7, 231620840), (8, 202668235), (10, 162134588), (11, 147395080), (14, 115810420), (20, 81067294), (22, 73697540), (28, 57905210), (31, 52301480), (35, 46324168), (40, 40533647), (44, 36848770), (55, 29479016), (56, 28952605), (62, 26150740), (70, 23162084), (77, 21056440), (88, 18424385), (110, 14739508), (124, 13075370), (140, 11581042), (154, 10528220), (155, 10460296), (217, 7471640), (220, 7369754), (248, 6537685), (280, 5790521), (308, 5264110), (310, 5230148), (341, 4754680), (385, 4211288), (434, 3735820), (440, 3684877), (616, 2632055), (620, 2615074), (682, 2377340), (770, 2105644), (868, 1867910), (1085, 1494328), (1240, 1307537), (1364, 1188670), (1540, 1052822), (1705, 950936), (1736, 933955), (2170, 747164), (2387, 679240), (2728, 594335), (3080, 526411), (3410, 475468), (4340, 373582), (4774, 339620), (6820, 237734), (8680, 186791), (9548, 169810), (11935, 135848), (13640, 118867), (16981, 95480), (19096, 84905), (23870, 67924), (33962, 47740)]