21548520

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{503}}^1$

素因数の和:544

約数の個数: 192

約数和(自身を含む): 84913920

約数和(自身を除く): 63365400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 28, 30, 34, 35, 36, 40, 42, 45, 51, 56, 60, 63, 68, 70, 72, 84, 85, 90, 102, 105, 119, 120, 126, 136, 140, 153, 168, 170, 180, 204, 210, 238, 252, 255, 280, 306, 315, 340, 357, 360, 408, 420, 476, 503, 504, 510, 595, 612, 630, 680, 714, 765, 840, 952, 1006, 1020, 1071, 1190, 1224, 1260, 1428, 1509, 1530, 1785, 2012, 2040, 2142, 2380, 2515, 2520, 2856, 3018, 3060, 3521, 3570, 4024, 4284, 4527, 4760, 5030, 5355, 6036, 6120, 7042, 7140, 7545, 8551, 8568, 9054, 10060, 10563, 10710, 12072, 14084, 14280, 15090, 17102, 17605, 18108, 20120, 21126, 21420, 22635, 25653, 28168, 30180, 31689, 34204, 35210, 36216, 42252, 42755, 42840, 45270, 51306, 52815, 59857, 60360, 63378, 68408, 70420, 76959, 84504, 85510, 90540, 102612, 105630, 119714, 126756, 128265, 140840, 153918, 158445, 171020, 179571, 181080, 205224, 211260, 239428, 253512, 256530, 299285, 307836, 316890, 342040, 359142, 384795, 422520, 478856, 513060, 538713, 598570, 615672, 633780, 718284, 769590, 897855, 1026120, 1077426, 1197140, 1267560, 1436568, 1539180, 1795710, 2154852, 2394280, 2693565, 3078360, 3591420, 4309704, 5387130, 7182840, 10774260, 21548520]

約数ペア:

[(1, 21548520), (2, 10774260), (3, 7182840), (4, 5387130), (5, 4309704), (6, 3591420), (7, 3078360), (8, 2693565), (9, 2394280), (10, 2154852), (12, 1795710), (14, 1539180), (15, 1436568), (17, 1267560), (18, 1197140), (20, 1077426), (21, 1026120), (24, 897855), (28, 769590), (30, 718284), (34, 633780), (35, 615672), (36, 598570), (40, 538713), (42, 513060), (45, 478856), (51, 422520), (56, 384795), (60, 359142), (63, 342040), (68, 316890), (70, 307836), (72, 299285), (84, 256530), (85, 253512), (90, 239428), (102, 211260), (105, 205224), (119, 181080), (120, 179571), (126, 171020), (136, 158445), (140, 153918), (153, 140840), (168, 128265), (170, 126756), (180, 119714), (204, 105630), (210, 102612), (238, 90540), (252, 85510), (255, 84504), (280, 76959), (306, 70420), (315, 68408), (340, 63378), (357, 60360), (360, 59857), (408, 52815), (420, 51306), (476, 45270), (503, 42840), (504, 42755), (510, 42252), (595, 36216), (612, 35210), (630, 34204), (680, 31689), (714, 30180), (765, 28168), (840, 25653), (952, 22635), (1006, 21420), (1020, 21126), (1071, 20120), (1190, 18108), (1224, 17605), (1260, 17102), (1428, 15090), (1509, 14280), (1530, 14084), (1785, 12072), (2012, 10710), (2040, 10563), (2142, 10060), (2380, 9054), (2515, 8568), (2520, 8551), (2856, 7545), (3018, 7140), (3060, 7042), (3521, 6120), (3570, 6036), (4024, 5355), (4284, 5030), (4527, 4760)]