21264960

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1303}}^1$

素因数の和:1340

約数の個数: 112

約数和(自身を含む): 71542656

約数和(自身を除く): 50277696

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 136, 160, 170, 192, 204, 240, 255, 272, 320, 340, 408, 480, 510, 544, 680, 816, 960, 1020, 1088, 1303, 1360, 1632, 2040, 2606, 2720, 3264, 3909, 4080, 5212, 5440, 6515, 7818, 8160, 10424, 13030, 15636, 16320, 19545, 20848, 22151, 26060, 31272, 39090, 41696, 44302, 52120, 62544, 66453, 78180, 83392, 88604, 104240, 110755, 125088, 132906, 156360, 177208, 208480, 221510, 250176, 265812, 312720, 332265, 354416, 416960, 443020, 531624, 625440, 664530, 708832, 886040, 1063248, 1250880, 1329060, 1417664, 1772080, 2126496, 2658120, 3544160, 4252992, 5316240, 7088320, 10632480, 21264960]

約数ペア:

[(1, 21264960), (2, 10632480), (3, 7088320), (4, 5316240), (5, 4252992), (6, 3544160), (8, 2658120), (10, 2126496), (12, 1772080), (15, 1417664), (16, 1329060), (17, 1250880), (20, 1063248), (24, 886040), (30, 708832), (32, 664530), (34, 625440), (40, 531624), (48, 443020), (51, 416960), (60, 354416), (64, 332265), (68, 312720), (80, 265812), (85, 250176), (96, 221510), (102, 208480), (120, 177208), (136, 156360), (160, 132906), (170, 125088), (192, 110755), (204, 104240), (240, 88604), (255, 83392), (272, 78180), (320, 66453), (340, 62544), (408, 52120), (480, 44302), (510, 41696), (544, 39090), (680, 31272), (816, 26060), (960, 22151), (1020, 20848), (1088, 19545), (1303, 16320), (1360, 15636), (1632, 13030), (2040, 10424), (2606, 8160), (2720, 7818), (3264, 6515), (3909, 5440), (4080, 5212)]