4005890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{643}}^1$

素因数の和:746

約数の個数: 32

約数和(自身を含む): 8346240

約数和(自身を除く): 4340350

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 89, 178, 445, 623, 643, 890, 1246, 1286, 3115, 3215, 4501, 6230, 6430, 9002, 22505, 45010, 57227, 114454, 286135, 400589, 572270, 801178, 2002945, 4005890]

約数ペア:

[(1, 4005890), (2, 2002945), (5, 801178), (7, 572270), (10, 400589), (14, 286135), (35, 114454), (70, 57227), (89, 45010), (178, 22505), (445, 9002), (623, 6430), (643, 6230), (890, 4501), (1246, 3215), (1286, 3115)]