21520080

素因数分解:

$2^4\times 3^8\times 5^1\times {\mathrm{41}}^1$

素因数の和:78

約数の個数: 180

約数和(自身を含む): 76877892

約数和(自身を除く): 55357812

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 41, 45, 48, 54, 60, 72, 80, 81, 82, 90, 108, 120, 123, 135, 144, 162, 164, 180, 205, 216, 240, 243, 246, 270, 324, 328, 360, 369, 405, 410, 432, 486, 492, 540, 615, 648, 656, 720, 729, 738, 810, 820, 972, 984, 1080, 1107, 1215, 1230, 1296, 1458, 1476, 1620, 1640, 1845, 1944, 1968, 2160, 2187, 2214, 2430, 2460, 2916, 2952, 3240, 3280, 3321, 3645, 3690, 3888, 4374, 4428, 4860, 4920, 5535, 5832, 5904, 6480, 6561, 6642, 7290, 7380, 8748, 8856, 9720, 9840, 9963, 10935, 11070, 11664, 13122, 13284, 14580, 14760, 16605, 17496, 17712, 19440, 19926, 21870, 22140, 26244, 26568, 29160, 29520, 29889, 32805, 33210, 34992, 39852, 43740, 44280, 49815, 52488, 53136, 58320, 59778, 65610, 66420, 79704, 87480, 88560, 89667, 99630, 104976, 119556, 131220, 132840, 149445, 159408, 174960, 179334, 199260, 239112, 262440, 265680, 269001, 298890, 358668, 398520, 448335, 478224, 524880, 538002, 597780, 717336, 797040, 896670, 1076004, 1195560, 1345005, 1434672, 1793340, 2152008, 2391120, 2690010, 3586680, 4304016, 5380020, 7173360, 10760040, 21520080]

約数ペア:

[(1, 21520080), (2, 10760040), (3, 7173360), (4, 5380020), (5, 4304016), (6, 3586680), (8, 2690010), (9, 2391120), (10, 2152008), (12, 1793340), (15, 1434672), (16, 1345005), (18, 1195560), (20, 1076004), (24, 896670), (27, 797040), (30, 717336), (36, 597780), (40, 538002), (41, 524880), (45, 478224), (48, 448335), (54, 398520), (60, 358668), (72, 298890), (80, 269001), (81, 265680), (82, 262440), (90, 239112), (108, 199260), (120, 179334), (123, 174960), (135, 159408), (144, 149445), (162, 132840), (164, 131220), (180, 119556), (205, 104976), (216, 99630), (240, 89667), (243, 88560), (246, 87480), (270, 79704), (324, 66420), (328, 65610), (360, 59778), (369, 58320), (405, 53136), (410, 52488), (432, 49815), (486, 44280), (492, 43740), (540, 39852), (615, 34992), (648, 33210), (656, 32805), (720, 29889), (729, 29520), (738, 29160), (810, 26568), (820, 26244), (972, 22140), (984, 21870), (1080, 19926), (1107, 19440), (1215, 17712), (1230, 17496), (1296, 16605), (1458, 14760), (1476, 14580), (1620, 13284), (1640, 13122), (1845, 11664), (1944, 11070), (1968, 10935), (2160, 9963), (2187, 9840), (2214, 9720), (2430, 8856), (2460, 8748), (2916, 7380), (2952, 7290), (3240, 6642), (3280, 6561), (3321, 6480), (3645, 5904), (3690, 5832), (3888, 5535), (4374, 4920), (4428, 4860)]