399227780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{2083}}^1$

素因数の和:2173

約数の個数: 72

約数和(自身を含む): 985215168

約数和(自身を除く): 585987388

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 1369, 2083, 2590, 2738, 4166, 5180, 5476, 6845, 8332, 9583, 10415, 13690, 14581, 19166, 20830, 27380, 29162, 38332, 41660, 47915, 58324, 72905, 77071, 95830, 145810, 154142, 191660, 291620, 308284, 385355, 539497, 770710, 1078994, 1541420, 2157988, 2697485, 2851627, 5394970, 5703254, 10789940, 11406508, 14258135, 19961389, 28516270, 39922778, 57032540, 79845556, 99806945, 199613890, 399227780]

約数ペア:

[(1, 399227780), (2, 199613890), (4, 99806945), (5, 79845556), (7, 57032540), (10, 39922778), (14, 28516270), (20, 19961389), (28, 14258135), (35, 11406508), (37, 10789940), (70, 5703254), (74, 5394970), (140, 2851627), (148, 2697485), (185, 2157988), (259, 1541420), (370, 1078994), (518, 770710), (740, 539497), (1036, 385355), (1295, 308284), (1369, 291620), (2083, 191660), (2590, 154142), (2738, 145810), (4166, 95830), (5180, 77071), (5476, 72905), (6845, 58324), (8332, 47915), (9583, 41660), (10415, 38332), (13690, 29162), (14581, 27380), (19166, 20830)]