20303280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:355

約数の個数: 120

約数和(自身を含む): 69000048

約数和(自身を除く): 48696768

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 163, 173, 180, 240, 326, 346, 360, 489, 519, 652, 692, 720, 815, 865, 978, 1038, 1304, 1384, 1467, 1557, 1630, 1730, 1956, 2076, 2445, 2595, 2608, 2768, 2934, 3114, 3260, 3460, 3912, 4152, 4890, 5190, 5868, 6228, 6520, 6920, 7335, 7785, 7824, 8304, 9780, 10380, 11736, 12456, 13040, 13840, 14670, 15570, 19560, 20760, 23472, 24912, 28199, 29340, 31140, 39120, 41520, 56398, 58680, 62280, 84597, 112796, 117360, 124560, 140995, 169194, 225592, 253791, 281990, 338388, 422985, 451184, 507582, 563980, 676776, 845970, 1015164, 1127960, 1268955, 1353552, 1691940, 2030328, 2255920, 2537910, 3383880, 4060656, 5075820, 6767760, 10151640, 20303280]

約数ペア:

[(1, 20303280), (2, 10151640), (3, 6767760), (4, 5075820), (5, 4060656), (6, 3383880), (8, 2537910), (9, 2255920), (10, 2030328), (12, 1691940), (15, 1353552), (16, 1268955), (18, 1127960), (20, 1015164), (24, 845970), (30, 676776), (36, 563980), (40, 507582), (45, 451184), (48, 422985), (60, 338388), (72, 281990), (80, 253791), (90, 225592), (120, 169194), (144, 140995), (163, 124560), (173, 117360), (180, 112796), (240, 84597), (326, 62280), (346, 58680), (360, 56398), (489, 41520), (519, 39120), (652, 31140), (692, 29340), (720, 28199), (815, 24912), (865, 23472), (978, 20760), (1038, 19560), (1304, 15570), (1384, 14670), (1467, 13840), (1557, 13040), (1630, 12456), (1730, 11736), (1956, 10380), (2076, 9780), (2445, 8304), (2595, 7824), (2608, 7785), (2768, 7335), (2934, 6920), (3114, 6520), (3260, 6228), (3460, 5868), (3912, 5190), (4152, 4890)]