638892840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{18947}}^1$

素因数の和:19242

約数の個数: 64

約数和(自身を含む): 1923600960

約数和(自身を除く): 1284708120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 281, 562, 843, 1124, 1405, 1686, 2248, 2810, 3372, 4215, 5620, 6744, 8430, 11240, 16860, 18947, 33720, 37894, 56841, 75788, 94735, 113682, 151576, 189470, 227364, 284205, 378940, 454728, 568410, 757880, 1136820, 2273640, 5324107, 10648214, 15972321, 21296428, 26620535, 31944642, 42592856, 53241070, 63889284, 79861605, 106482140, 127778568, 159723210, 212964280, 319446420, 638892840]

約数ペア:

[(1, 638892840), (2, 319446420), (3, 212964280), (4, 159723210), (5, 127778568), (6, 106482140), (8, 79861605), (10, 63889284), (12, 53241070), (15, 42592856), (20, 31944642), (24, 26620535), (30, 21296428), (40, 15972321), (60, 10648214), (120, 5324107), (281, 2273640), (562, 1136820), (843, 757880), (1124, 568410), (1405, 454728), (1686, 378940), (2248, 284205), (2810, 227364), (3372, 189470), (4215, 151576), (5620, 113682), (6744, 94735), (8430, 75788), (11240, 56841), (16860, 37894), (18947, 33720)]