31978080

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{419}}^1$

素因数の和:493

約数の個数: 144

約数和(自身を含む): 111449520

約数和(自身を除く): 79471440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 53, 60, 72, 80, 90, 96, 106, 120, 144, 159, 160, 180, 212, 240, 265, 288, 318, 360, 419, 424, 477, 480, 530, 636, 720, 795, 838, 848, 954, 1060, 1257, 1272, 1440, 1590, 1676, 1696, 1908, 2095, 2120, 2385, 2514, 2544, 3180, 3352, 3771, 3816, 4190, 4240, 4770, 5028, 5088, 6285, 6360, 6704, 7542, 7632, 8380, 8480, 9540, 10056, 12570, 12720, 13408, 15084, 15264, 16760, 18855, 19080, 20112, 22207, 25140, 25440, 30168, 33520, 37710, 38160, 40224, 44414, 50280, 60336, 66621, 67040, 75420, 76320, 88828, 100560, 111035, 120672, 133242, 150840, 177656, 199863, 201120, 222070, 266484, 301680, 333105, 355312, 399726, 444140, 532968, 603360, 666210, 710624, 799452, 888280, 999315, 1065936, 1332420, 1598904, 1776560, 1998630, 2131872, 2664840, 3197808, 3553120, 3997260, 5329680, 6395616, 7994520, 10659360, 15989040, 31978080]

約数ペア:

[(1, 31978080), (2, 15989040), (3, 10659360), (4, 7994520), (5, 6395616), (6, 5329680), (8, 3997260), (9, 3553120), (10, 3197808), (12, 2664840), (15, 2131872), (16, 1998630), (18, 1776560), (20, 1598904), (24, 1332420), (30, 1065936), (32, 999315), (36, 888280), (40, 799452), (45, 710624), (48, 666210), (53, 603360), (60, 532968), (72, 444140), (80, 399726), (90, 355312), (96, 333105), (106, 301680), (120, 266484), (144, 222070), (159, 201120), (160, 199863), (180, 177656), (212, 150840), (240, 133242), (265, 120672), (288, 111035), (318, 100560), (360, 88828), (419, 76320), (424, 75420), (477, 67040), (480, 66621), (530, 60336), (636, 50280), (720, 44414), (795, 40224), (838, 38160), (848, 37710), (954, 33520), (1060, 30168), (1257, 25440), (1272, 25140), (1440, 22207), (1590, 20112), (1676, 19080), (1696, 18855), (1908, 16760), (2095, 15264), (2120, 15084), (2385, 13408), (2514, 12720), (2544, 12570), (3180, 10056), (3352, 9540), (3771, 8480), (3816, 8380), (4190, 7632), (4240, 7542), (4770, 6704), (5028, 6360), (5088, 6285)]