21546240

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:236

約数の個数: 144

約数和(自身を含む): 71425536

約数和(自身を除く): 49879296

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 155, 160, 181, 186, 192, 240, 248, 256, 310, 320, 362, 372, 384, 465, 480, 496, 543, 620, 640, 724, 744, 768, 905, 930, 960, 992, 1086, 1240, 1280, 1448, 1488, 1810, 1860, 1920, 1984, 2172, 2480, 2715, 2896, 2976, 3620, 3720, 3840, 3968, 4344, 4960, 5430, 5611, 5792, 5952, 7240, 7440, 7936, 8688, 9920, 10860, 11222, 11584, 11904, 14480, 14880, 16833, 17376, 19840, 21720, 22444, 23168, 23808, 28055, 28960, 29760, 33666, 34752, 39680, 43440, 44888, 46336, 56110, 57920, 59520, 67332, 69504, 84165, 86880, 89776, 112220, 115840, 119040, 134664, 139008, 168330, 173760, 179552, 224440, 231680, 269328, 336660, 347520, 359104, 448880, 538656, 673320, 695040, 718208, 897760, 1077312, 1346640, 1436416, 1795520, 2154624, 2693280, 3591040, 4309248, 5386560, 7182080, 10773120, 21546240]

約数ペア:

[(1, 21546240), (2, 10773120), (3, 7182080), (4, 5386560), (5, 4309248), (6, 3591040), (8, 2693280), (10, 2154624), (12, 1795520), (15, 1436416), (16, 1346640), (20, 1077312), (24, 897760), (30, 718208), (31, 695040), (32, 673320), (40, 538656), (48, 448880), (60, 359104), (62, 347520), (64, 336660), (80, 269328), (93, 231680), (96, 224440), (120, 179552), (124, 173760), (128, 168330), (155, 139008), (160, 134664), (181, 119040), (186, 115840), (192, 112220), (240, 89776), (248, 86880), (256, 84165), (310, 69504), (320, 67332), (362, 59520), (372, 57920), (384, 56110), (465, 46336), (480, 44888), (496, 43440), (543, 39680), (620, 34752), (640, 33666), (724, 29760), (744, 28960), (768, 28055), (905, 23808), (930, 23168), (960, 22444), (992, 21720), (1086, 19840), (1240, 17376), (1280, 16833), (1448, 14880), (1488, 14480), (1810, 11904), (1860, 11584), (1920, 11222), (1984, 10860), (2172, 9920), (2480, 8688), (2715, 7936), (2896, 7440), (2976, 7240), (3620, 5952), (3720, 5792), (3840, 5611), (3968, 5430), (4344, 4960)]