20574960

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:391

約数の個数: 160

約数和(自身を含む): 75090432

約数和(自身を除く): 54515472

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 37, 40, 42, 48, 56, 60, 70, 74, 80, 84, 105, 111, 112, 120, 140, 148, 168, 185, 210, 222, 240, 259, 280, 296, 331, 336, 370, 420, 444, 518, 555, 560, 592, 662, 740, 777, 840, 888, 993, 1036, 1110, 1295, 1324, 1480, 1554, 1655, 1680, 1776, 1986, 2072, 2220, 2317, 2590, 2648, 2960, 3108, 3310, 3885, 3972, 4144, 4440, 4634, 4965, 5180, 5296, 6216, 6620, 6951, 7770, 7944, 8880, 9268, 9930, 10360, 11585, 12247, 12432, 13240, 13902, 15540, 15888, 18536, 19860, 20720, 23170, 24494, 26480, 27804, 31080, 34755, 36741, 37072, 39720, 46340, 48988, 55608, 61235, 62160, 69510, 73482, 79440, 85729, 92680, 97976, 111216, 122470, 139020, 146964, 171458, 183705, 185360, 195952, 244940, 257187, 278040, 293928, 342916, 367410, 428645, 489880, 514374, 556080, 587856, 685832, 734820, 857290, 979760, 1028748, 1285935, 1371664, 1469640, 1714580, 2057496, 2571870, 2939280, 3429160, 4114992, 5143740, 6858320, 10287480, 20574960]

約数ペア:

[(1, 20574960), (2, 10287480), (3, 6858320), (4, 5143740), (5, 4114992), (6, 3429160), (7, 2939280), (8, 2571870), (10, 2057496), (12, 1714580), (14, 1469640), (15, 1371664), (16, 1285935), (20, 1028748), (21, 979760), (24, 857290), (28, 734820), (30, 685832), (35, 587856), (37, 556080), (40, 514374), (42, 489880), (48, 428645), (56, 367410), (60, 342916), (70, 293928), (74, 278040), (80, 257187), (84, 244940), (105, 195952), (111, 185360), (112, 183705), (120, 171458), (140, 146964), (148, 139020), (168, 122470), (185, 111216), (210, 97976), (222, 92680), (240, 85729), (259, 79440), (280, 73482), (296, 69510), (331, 62160), (336, 61235), (370, 55608), (420, 48988), (444, 46340), (518, 39720), (555, 37072), (560, 36741), (592, 34755), (662, 31080), (740, 27804), (777, 26480), (840, 24494), (888, 23170), (993, 20720), (1036, 19860), (1110, 18536), (1295, 15888), (1324, 15540), (1480, 13902), (1554, 13240), (1655, 12432), (1680, 12247), (1776, 11585), (1986, 10360), (2072, 9930), (2220, 9268), (2317, 8880), (2590, 7944), (2648, 7770), (2960, 6951), (3108, 6620), (3310, 6216), (3885, 5296), (3972, 5180), (4144, 4965), (4440, 4634)]