21254760

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1$

素因数の和:208

約数の個数: 192

約数和(自身を含む): 76826880

約数和(自身を除く): 55572120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 23, 24, 30, 34, 36, 40, 45, 46, 51, 60, 68, 69, 72, 85, 90, 92, 102, 115, 120, 136, 138, 151, 153, 170, 180, 184, 204, 207, 230, 255, 276, 302, 306, 340, 345, 360, 391, 408, 414, 453, 460, 510, 552, 604, 612, 680, 690, 755, 765, 782, 828, 906, 920, 1020, 1035, 1173, 1208, 1224, 1359, 1380, 1510, 1530, 1564, 1656, 1812, 1955, 2040, 2070, 2265, 2346, 2567, 2718, 2760, 3020, 3060, 3128, 3473, 3519, 3624, 3910, 4140, 4530, 4692, 5134, 5436, 5865, 6040, 6120, 6795, 6946, 7038, 7701, 7820, 8280, 9060, 9384, 10268, 10419, 10872, 11730, 12835, 13590, 13892, 14076, 15402, 15640, 17365, 17595, 18120, 20536, 20838, 23103, 23460, 25670, 27180, 27784, 28152, 30804, 31257, 34730, 35190, 38505, 41676, 46206, 46920, 51340, 52095, 54360, 59041, 61608, 62514, 69460, 70380, 77010, 83352, 92412, 102680, 104190, 115515, 118082, 125028, 138920, 140760, 154020, 156285, 177123, 184824, 208380, 231030, 236164, 250056, 295205, 308040, 312570, 354246, 416760, 462060, 472328, 531369, 590410, 625140, 708492, 885615, 924120, 1062738, 1180820, 1250280, 1416984, 1771230, 2125476, 2361640, 2656845, 3542460, 4250952, 5313690, 7084920, 10627380, 21254760]

約数ペア:

[(1, 21254760), (2, 10627380), (3, 7084920), (4, 5313690), (5, 4250952), (6, 3542460), (8, 2656845), (9, 2361640), (10, 2125476), (12, 1771230), (15, 1416984), (17, 1250280), (18, 1180820), (20, 1062738), (23, 924120), (24, 885615), (30, 708492), (34, 625140), (36, 590410), (40, 531369), (45, 472328), (46, 462060), (51, 416760), (60, 354246), (68, 312570), (69, 308040), (72, 295205), (85, 250056), (90, 236164), (92, 231030), (102, 208380), (115, 184824), (120, 177123), (136, 156285), (138, 154020), (151, 140760), (153, 138920), (170, 125028), (180, 118082), (184, 115515), (204, 104190), (207, 102680), (230, 92412), (255, 83352), (276, 77010), (302, 70380), (306, 69460), (340, 62514), (345, 61608), (360, 59041), (391, 54360), (408, 52095), (414, 51340), (453, 46920), (460, 46206), (510, 41676), (552, 38505), (604, 35190), (612, 34730), (680, 31257), (690, 30804), (755, 28152), (765, 27784), (782, 27180), (828, 25670), (906, 23460), (920, 23103), (1020, 20838), (1035, 20536), (1173, 18120), (1208, 17595), (1224, 17365), (1359, 15640), (1380, 15402), (1510, 14076), (1530, 13892), (1564, 13590), (1656, 12835), (1812, 11730), (1955, 10872), (2040, 10419), (2070, 10268), (2265, 9384), (2346, 9060), (2567, 8280), (2718, 7820), (2760, 7701), (3020, 7038), (3060, 6946), (3128, 6795), (3473, 6120), (3519, 6040), (3624, 5865), (3910, 5436), (4140, 5134), (4530, 4692)]