279740

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:277

約数の個数: 24

約数和(自身を含む): 598752

約数和(自身を除く): 319012

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 197, 284, 355, 394, 710, 788, 985, 1420, 1970, 3940, 13987, 27974, 55948, 69935, 139870, 279740]

約数ペア:

[(1, 279740), (2, 139870), (4, 69935), (5, 55948), (10, 27974), (20, 13987), (71, 3940), (142, 1970), (197, 1420), (284, 985), (355, 788), (394, 710)]