20559420

素因数分解:

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

素因数の和:79

約数の個数: 240

約数和(自身を含む): 77246400

約数和(自身を除く): 56686980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 37, 42, 45, 49, 54, 60, 63, 70, 74, 81, 84, 90, 98, 105, 108, 111, 126, 135, 140, 147, 148, 162, 180, 185, 189, 196, 210, 222, 245, 252, 259, 270, 294, 315, 324, 333, 343, 370, 378, 405, 420, 441, 444, 490, 518, 540, 555, 567, 588, 630, 666, 686, 735, 740, 756, 777, 810, 882, 945, 980, 999, 1029, 1036, 1110, 1134, 1260, 1295, 1323, 1332, 1372, 1470, 1554, 1620, 1665, 1715, 1764, 1813, 1890, 1998, 2058, 2205, 2220, 2268, 2331, 2590, 2646, 2835, 2940, 2997, 3087, 3108, 3330, 3430, 3626, 3780, 3885, 3969, 3996, 4116, 4410, 4662, 4995, 5145, 5180, 5292, 5439, 5670, 5994, 6174, 6615, 6660, 6860, 6993, 7252, 7770, 7938, 8820, 9065, 9261, 9324, 9990, 10290, 10878, 11340, 11655, 11988, 12348, 12691, 13230, 13986, 14985, 15435, 15540, 15876, 16317, 18130, 18522, 19845, 19980, 20580, 20979, 21756, 23310, 25382, 26460, 27195, 27783, 27972, 29970, 30870, 32634, 34965, 36260, 37044, 38073, 39690, 41958, 46305, 46620, 48951, 50764, 54390, 55566, 59940, 61740, 63455, 65268, 69930, 76146, 79380, 81585, 83916, 92610, 97902, 104895, 108780, 111132, 114219, 126910, 138915, 139860, 146853, 152292, 163170, 185220, 190365, 195804, 209790, 228438, 244755, 253820, 277830, 293706, 326340, 342657, 380730, 419580, 456876, 489510, 555660, 571095, 587412, 685314, 734265, 761460, 979020, 1027971, 1142190, 1370628, 1468530, 1713285, 2055942, 2284380, 2937060, 3426570, 4111884, 5139855, 6853140, 10279710, 20559420]

約数ペア:

[(1, 20559420), (2, 10279710), (3, 6853140), (4, 5139855), (5, 4111884), (6, 3426570), (7, 2937060), (9, 2284380), (10, 2055942), (12, 1713285), (14, 1468530), (15, 1370628), (18, 1142190), (20, 1027971), (21, 979020), (27, 761460), (28, 734265), (30, 685314), (35, 587412), (36, 571095), (37, 555660), (42, 489510), (45, 456876), (49, 419580), (54, 380730), (60, 342657), (63, 326340), (70, 293706), (74, 277830), (81, 253820), (84, 244755), (90, 228438), (98, 209790), (105, 195804), (108, 190365), (111, 185220), (126, 163170), (135, 152292), (140, 146853), (147, 139860), (148, 138915), (162, 126910), (180, 114219), (185, 111132), (189, 108780), (196, 104895), (210, 97902), (222, 92610), (245, 83916), (252, 81585), (259, 79380), (270, 76146), (294, 69930), (315, 65268), (324, 63455), (333, 61740), (343, 59940), (370, 55566), (378, 54390), (405, 50764), (420, 48951), (441, 46620), (444, 46305), (490, 41958), (518, 39690), (540, 38073), (555, 37044), (567, 36260), (588, 34965), (630, 32634), (666, 30870), (686, 29970), (735, 27972), (740, 27783), (756, 27195), (777, 26460), (810, 25382), (882, 23310), (945, 21756), (980, 20979), (999, 20580), (1029, 19980), (1036, 19845), (1110, 18522), (1134, 18130), (1260, 16317), (1295, 15876), (1323, 15540), (1332, 15435), (1372, 14985), (1470, 13986), (1554, 13230), (1620, 12691), (1665, 12348), (1715, 11988), (1764, 11655), (1813, 11340), (1890, 10878), (1998, 10290), (2058, 9990), (2205, 9324), (2220, 9261), (2268, 9065), (2331, 8820), (2590, 7938), (2646, 7770), (2835, 7252), (2940, 6993), (2997, 6860), (3087, 6660), (3108, 6615), (3330, 6174), (3430, 5994), (3626, 5670), (3780, 5439), (3885, 5292), (3969, 5180), (3996, 5145), (4116, 4995), (4410, 4662)]