87489740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{336499}}^1$

素因数の和:336521

約数の個数: 24

約数和(自身を含む): 197862000

約数和(自身を除く): 110372260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 336499, 672998, 1345996, 1682495, 3364990, 4374487, 6729980, 8748974, 17497948, 21872435, 43744870, 87489740]

約数ペア:

[(1, 87489740), (2, 43744870), (4, 21872435), (5, 17497948), (10, 8748974), (13, 6729980), (20, 4374487), (26, 3364990), (52, 1682495), (65, 1345996), (130, 672998), (260, 336499)]