21605640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 192

約数和(自身を含む): 79574400

約数和(自身を除く): 57968760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 51, 56, 60, 68, 70, 84, 85, 89, 102, 105, 119, 120, 136, 140, 168, 170, 178, 204, 210, 238, 255, 267, 280, 289, 340, 356, 357, 408, 420, 445, 476, 510, 534, 578, 595, 623, 680, 712, 714, 840, 867, 890, 952, 1020, 1068, 1156, 1190, 1246, 1335, 1428, 1445, 1513, 1734, 1780, 1785, 1869, 2023, 2040, 2136, 2312, 2380, 2492, 2670, 2856, 2890, 3026, 3115, 3468, 3560, 3570, 3738, 4046, 4335, 4539, 4760, 4984, 5340, 5780, 6052, 6069, 6230, 6936, 7140, 7476, 7565, 8092, 8670, 9078, 9345, 10115, 10591, 10680, 11560, 12104, 12138, 12460, 14280, 14952, 15130, 16184, 17340, 18156, 18690, 20230, 21182, 22695, 24276, 24920, 25721, 30260, 30345, 31773, 34680, 36312, 37380, 40460, 42364, 45390, 48552, 51442, 52955, 60520, 60690, 63546, 74760, 77163, 80920, 84728, 90780, 102884, 105910, 121380, 127092, 128605, 154326, 158865, 180047, 181560, 205768, 211820, 242760, 254184, 257210, 308652, 317730, 360094, 385815, 423640, 514420, 540141, 617304, 635460, 720188, 771630, 900235, 1028840, 1080282, 1270920, 1440376, 1543260, 1800470, 2160564, 2700705, 3086520, 3600940, 4321128, 5401410, 7201880, 10802820, 21605640]

約数ペア:

[(1, 21605640), (2, 10802820), (3, 7201880), (4, 5401410), (5, 4321128), (6, 3600940), (7, 3086520), (8, 2700705), (10, 2160564), (12, 1800470), (14, 1543260), (15, 1440376), (17, 1270920), (20, 1080282), (21, 1028840), (24, 900235), (28, 771630), (30, 720188), (34, 635460), (35, 617304), (40, 540141), (42, 514420), (51, 423640), (56, 385815), (60, 360094), (68, 317730), (70, 308652), (84, 257210), (85, 254184), (89, 242760), (102, 211820), (105, 205768), (119, 181560), (120, 180047), (136, 158865), (140, 154326), (168, 128605), (170, 127092), (178, 121380), (204, 105910), (210, 102884), (238, 90780), (255, 84728), (267, 80920), (280, 77163), (289, 74760), (340, 63546), (356, 60690), (357, 60520), (408, 52955), (420, 51442), (445, 48552), (476, 45390), (510, 42364), (534, 40460), (578, 37380), (595, 36312), (623, 34680), (680, 31773), (712, 30345), (714, 30260), (840, 25721), (867, 24920), (890, 24276), (952, 22695), (1020, 21182), (1068, 20230), (1156, 18690), (1190, 18156), (1246, 17340), (1335, 16184), (1428, 15130), (1445, 14952), (1513, 14280), (1734, 12460), (1780, 12138), (1785, 12104), (1869, 11560), (2023, 10680), (2040, 10591), (2136, 10115), (2312, 9345), (2380, 9078), (2492, 8670), (2670, 8092), (2856, 7565), (2890, 7476), (3026, 7140), (3115, 6936), (3468, 6230), (3560, 6069), (3570, 6052), (3738, 5780), (4046, 5340), (4335, 4984), (4539, 4760)]