18954065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{1009}}^1$

素因数の和:1061

約数の個数: 24

約数和(自身を含む): 26045880

約数和(自身を除く): 7091815

約数列:

[1, 5, 13, 17, 65, 85, 221, 289, 1009, 1105, 1445, 3757, 5045, 13117, 17153, 18785, 65585, 85765, 222989, 291601, 1114945, 1458005, 3790813, 18954065]

約数ペア:

[(1, 18954065), (5, 3790813), (13, 1458005), (17, 1114945), (65, 291601), (85, 222989), (221, 85765), (289, 65585), (1009, 18785), (1105, 17153), (1445, 13117), (3757, 5045)]