8647940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{277}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 20923392

約数和(自身を除く): 12275452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 277, 446, 554, 892, 1108, 1115, 1385, 1561, 1939, 2230, 2770, 3122, 3878, 4460, 5540, 6244, 7756, 7805, 9695, 15610, 19390, 31220, 38780, 61771, 123542, 247084, 308855, 432397, 617710, 864794, 1235420, 1729588, 2161985, 4323970, 8647940]

約数ペア:

[(1, 8647940), (2, 4323970), (4, 2161985), (5, 1729588), (7, 1235420), (10, 864794), (14, 617710), (20, 432397), (28, 308855), (35, 247084), (70, 123542), (140, 61771), (223, 38780), (277, 31220), (446, 19390), (554, 15610), (892, 9695), (1108, 7805), (1115, 7756), (1385, 6244), (1561, 5540), (1939, 4460), (2230, 3878), (2770, 3122)]