20913425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{281}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 28149240

約数和(自身を除く): 7235815

約数列:

[1, 5, 13, 25, 65, 229, 281, 325, 1145, 1405, 2977, 3653, 5725, 7025, 14885, 18265, 64349, 74425, 91325, 321745, 836537, 1608725, 4182685, 20913425]

約数ペア:

[(1, 20913425), (5, 4182685), (13, 1608725), (25, 836537), (65, 321745), (229, 91325), (281, 74425), (325, 64349), (1145, 18265), (1405, 14885), (2977, 7025), (3653, 5725)]