87971720

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{20177}}^1$

素因数の和:20297

約数の個数: 32

約数和(自身を含む): 199762200

約数和(自身を除く): 111790480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 20177, 40354, 80708, 100885, 161416, 201770, 403540, 807080, 2199293, 4398586, 8797172, 10996465, 17594344, 21992930, 43985860, 87971720]

約数ペア:

[(1, 87971720), (2, 43985860), (4, 21992930), (5, 17594344), (8, 10996465), (10, 8797172), (20, 4398586), (40, 2199293), (109, 807080), (218, 403540), (436, 201770), (545, 161416), (872, 100885), (1090, 80708), (2180, 40354), (4360, 20177)]