28986620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{111487}}^1$

素因数の和:111509

約数の個数: 24

約数和(自身を含む): 65554944

約数和(自身を除く): 36568324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 111487, 222974, 445948, 557435, 1114870, 1449331, 2229740, 2898662, 5797324, 7246655, 14493310, 28986620]

約数ペア:

[(1, 28986620), (2, 14493310), (4, 7246655), (5, 5797324), (10, 2898662), (13, 2229740), (20, 1449331), (26, 1114870), (52, 557435), (65, 445948), (130, 222974), (260, 111487)]