80515400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{199}}^1$

素因数の和:256

約数の個数: 144

約数和(自身を含む): 228408000

約数和(自身を除く): 147892600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 25, 28, 34, 35, 40, 50, 56, 68, 70, 85, 100, 119, 136, 140, 170, 175, 199, 200, 238, 280, 289, 340, 350, 398, 425, 476, 578, 595, 680, 700, 796, 850, 952, 995, 1156, 1190, 1393, 1400, 1445, 1592, 1700, 1990, 2023, 2312, 2380, 2786, 2890, 2975, 3383, 3400, 3980, 4046, 4760, 4975, 5572, 5780, 5950, 6766, 6965, 7225, 7960, 8092, 9950, 10115, 11144, 11560, 11900, 13532, 13930, 14450, 16184, 16915, 19900, 20230, 23681, 23800, 27064, 27860, 28900, 33830, 34825, 39800, 40460, 47362, 50575, 55720, 57511, 57800, 67660, 69650, 80920, 84575, 94724, 101150, 115022, 118405, 135320, 139300, 169150, 189448, 202300, 230044, 236810, 278600, 287555, 338300, 402577, 404600, 460088, 473620, 575110, 592025, 676600, 805154, 947240, 1150220, 1184050, 1437775, 1610308, 2012885, 2300440, 2368100, 2875550, 3220616, 4025770, 4736200, 5751100, 8051540, 10064425, 11502200, 16103080, 20128850, 40257700, 80515400]

約数ペア:

[(1, 80515400), (2, 40257700), (4, 20128850), (5, 16103080), (7, 11502200), (8, 10064425), (10, 8051540), (14, 5751100), (17, 4736200), (20, 4025770), (25, 3220616), (28, 2875550), (34, 2368100), (35, 2300440), (40, 2012885), (50, 1610308), (56, 1437775), (68, 1184050), (70, 1150220), (85, 947240), (100, 805154), (119, 676600), (136, 592025), (140, 575110), (170, 473620), (175, 460088), (199, 404600), (200, 402577), (238, 338300), (280, 287555), (289, 278600), (340, 236810), (350, 230044), (398, 202300), (425, 189448), (476, 169150), (578, 139300), (595, 135320), (680, 118405), (700, 115022), (796, 101150), (850, 94724), (952, 84575), (995, 80920), (1156, 69650), (1190, 67660), (1393, 57800), (1400, 57511), (1445, 55720), (1592, 50575), (1700, 47362), (1990, 40460), (2023, 39800), (2312, 34825), (2380, 33830), (2786, 28900), (2890, 27860), (2975, 27064), (3383, 23800), (3400, 23681), (3980, 20230), (4046, 19900), (4760, 16915), (4975, 16184), (5572, 14450), (5780, 13930), (5950, 13532), (6766, 11900), (6965, 11560), (7225, 11144), (7960, 10115), (8092, 9950)]