21140220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15319}}^1$

素因数の和:15354

約数の個数: 48

約数和(自身を含む): 61770240

約数和(自身を除く): 40630020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15319, 30638, 45957, 61276, 76595, 91914, 153190, 183828, 229785, 306380, 352337, 459570, 704674, 919140, 1057011, 1409348, 1761685, 2114022, 3523370, 4228044, 5285055, 7046740, 10570110, 21140220]

約数ペア:

[(1, 21140220), (2, 10570110), (3, 7046740), (4, 5285055), (5, 4228044), (6, 3523370), (10, 2114022), (12, 1761685), (15, 1409348), (20, 1057011), (23, 919140), (30, 704674), (46, 459570), (60, 352337), (69, 306380), (92, 229785), (115, 183828), (138, 153190), (230, 91914), (276, 76595), (345, 61276), (460, 45957), (690, 30638), (1380, 15319)]