20810280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:203

約数の個数: 128

約数和(自身を含む): 66211200

約数和(自身を除く): 45400920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 43, 60, 74, 86, 109, 111, 120, 129, 148, 172, 185, 215, 218, 222, 258, 296, 327, 344, 370, 430, 436, 444, 516, 545, 555, 645, 654, 740, 860, 872, 888, 1032, 1090, 1110, 1290, 1308, 1480, 1591, 1635, 1720, 2180, 2220, 2580, 2616, 3182, 3270, 4033, 4360, 4440, 4687, 4773, 5160, 6364, 6540, 7955, 8066, 9374, 9546, 12099, 12728, 13080, 14061, 15910, 16132, 18748, 19092, 20165, 23435, 23865, 24198, 28122, 31820, 32264, 37496, 38184, 40330, 46870, 47730, 48396, 56244, 60495, 63640, 70305, 80660, 93740, 95460, 96792, 112488, 120990, 140610, 161320, 173419, 187480, 190920, 241980, 281220, 346838, 483960, 520257, 562440, 693676, 867095, 1040514, 1387352, 1734190, 2081028, 2601285, 3468380, 4162056, 5202570, 6936760, 10405140, 20810280]

約数ペア:

[(1, 20810280), (2, 10405140), (3, 6936760), (4, 5202570), (5, 4162056), (6, 3468380), (8, 2601285), (10, 2081028), (12, 1734190), (15, 1387352), (20, 1040514), (24, 867095), (30, 693676), (37, 562440), (40, 520257), (43, 483960), (60, 346838), (74, 281220), (86, 241980), (109, 190920), (111, 187480), (120, 173419), (129, 161320), (148, 140610), (172, 120990), (185, 112488), (215, 96792), (218, 95460), (222, 93740), (258, 80660), (296, 70305), (327, 63640), (344, 60495), (370, 56244), (430, 48396), (436, 47730), (444, 46870), (516, 40330), (545, 38184), (555, 37496), (645, 32264), (654, 31820), (740, 28122), (860, 24198), (872, 23865), (888, 23435), (1032, 20165), (1090, 19092), (1110, 18748), (1290, 16132), (1308, 15910), (1480, 14061), (1591, 13080), (1635, 12728), (1720, 12099), (2180, 9546), (2220, 9374), (2580, 8066), (2616, 7955), (3182, 6540), (3270, 6364), (4033, 5160), (4360, 4773), (4440, 4687)]