21518280

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8539}}^1$

素因数の和:8563

約数の個数: 96

約数和(自身を含む): 79934400

約数和(自身を除く): 58416120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8539, 17078, 25617, 34156, 42695, 51234, 59773, 68312, 76851, 85390, 102468, 119546, 128085, 153702, 170780, 179319, 204936, 239092, 256170, 298865, 307404, 341560, 358638, 384255, 478184, 512340, 537957, 597730, 614808, 717276, 768510, 896595, 1024680, 1075914, 1195460, 1434552, 1537020, 1793190, 2151828, 2390920, 2689785, 3074040, 3586380, 4303656, 5379570, 7172760, 10759140, 21518280]

約数ペア:

[(1, 21518280), (2, 10759140), (3, 7172760), (4, 5379570), (5, 4303656), (6, 3586380), (7, 3074040), (8, 2689785), (9, 2390920), (10, 2151828), (12, 1793190), (14, 1537020), (15, 1434552), (18, 1195460), (20, 1075914), (21, 1024680), (24, 896595), (28, 768510), (30, 717276), (35, 614808), (36, 597730), (40, 537957), (42, 512340), (45, 478184), (56, 384255), (60, 358638), (63, 341560), (70, 307404), (72, 298865), (84, 256170), (90, 239092), (105, 204936), (120, 179319), (126, 170780), (140, 153702), (168, 128085), (180, 119546), (210, 102468), (252, 85390), (280, 76851), (315, 68312), (360, 59773), (420, 51234), (504, 42695), (630, 34156), (840, 25617), (1260, 17078), (2520, 8539)]