19383665

素因数分解:

$5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1297}}^1$

素因数の和:1377

約数の個数: 24

約数和(自身を含む): 27522792

約数和(自身を除く): 8139127

約数列:

[1, 5, 7, 35, 49, 61, 245, 305, 427, 1297, 2135, 2989, 6485, 9079, 14945, 45395, 63553, 79117, 317765, 395585, 553819, 2769095, 3876733, 19383665]

約数ペア:

[(1, 19383665), (5, 3876733), (7, 2769095), (35, 553819), (49, 395585), (61, 317765), (245, 79117), (305, 63553), (427, 45395), (1297, 14945), (2135, 9079), (2989, 6485)]