15990660

素因数分解:

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

素因数の和:80

約数の個数: 180

約数和(自身を含む): 58115148

約数和(自身を除く): 42124488

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 37, 42, 45, 49, 60, 63, 70, 74, 84, 90, 98, 105, 111, 126, 140, 147, 148, 180, 185, 196, 210, 222, 245, 252, 259, 294, 315, 333, 343, 370, 420, 441, 444, 490, 518, 555, 588, 630, 666, 686, 735, 740, 777, 882, 980, 1029, 1036, 1110, 1260, 1295, 1332, 1372, 1470, 1554, 1665, 1715, 1764, 1813, 2058, 2205, 2220, 2331, 2401, 2590, 2940, 3087, 3108, 3330, 3430, 3626, 3885, 4116, 4410, 4662, 4802, 5145, 5180, 5439, 6174, 6660, 6860, 7203, 7252, 7770, 8820, 9065, 9324, 9604, 10290, 10878, 11655, 12005, 12348, 12691, 14406, 15435, 15540, 16317, 18130, 20580, 21609, 21756, 23310, 24010, 25382, 27195, 28812, 30870, 32634, 36015, 36260, 38073, 43218, 46620, 48020, 50764, 54390, 61740, 63455, 65268, 72030, 76146, 81585, 86436, 88837, 108045, 108780, 114219, 126910, 144060, 152292, 163170, 177674, 190365, 216090, 228438, 253820, 266511, 326340, 355348, 380730, 432180, 444185, 456876, 533022, 571095, 761460, 799533, 888370, 1066044, 1142190, 1332555, 1599066, 1776740, 2284380, 2665110, 3198132, 3997665, 5330220, 7995330, 15990660]

約数ペア:

[(1, 15990660), (2, 7995330), (3, 5330220), (4, 3997665), (5, 3198132), (6, 2665110), (7, 2284380), (9, 1776740), (10, 1599066), (12, 1332555), (14, 1142190), (15, 1066044), (18, 888370), (20, 799533), (21, 761460), (28, 571095), (30, 533022), (35, 456876), (36, 444185), (37, 432180), (42, 380730), (45, 355348), (49, 326340), (60, 266511), (63, 253820), (70, 228438), (74, 216090), (84, 190365), (90, 177674), (98, 163170), (105, 152292), (111, 144060), (126, 126910), (140, 114219), (147, 108780), (148, 108045), (180, 88837), (185, 86436), (196, 81585), (210, 76146), (222, 72030), (245, 65268), (252, 63455), (259, 61740), (294, 54390), (315, 50764), (333, 48020), (343, 46620), (370, 43218), (420, 38073), (441, 36260), (444, 36015), (490, 32634), (518, 30870), (555, 28812), (588, 27195), (630, 25382), (666, 24010), (686, 23310), (735, 21756), (740, 21609), (777, 20580), (882, 18130), (980, 16317), (1029, 15540), (1036, 15435), (1110, 14406), (1260, 12691), (1295, 12348), (1332, 12005), (1372, 11655), (1470, 10878), (1554, 10290), (1665, 9604), (1715, 9324), (1764, 9065), (1813, 8820), (2058, 7770), (2205, 7252), (2220, 7203), (2331, 6860), (2401, 6660), (2590, 6174), (2940, 5439), (3087, 5180), (3108, 5145), (3330, 4802), (3430, 4662), (3626, 4410), (3885, 4116)]