20878448

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{1301}}^1$

素因数の和:1385

約数の個数: 40

約数和(自身を含む): 43590960

約数和(自身を除く): 22712512

約数列:

[1, 2, 4, 8, 16, 17, 34, 59, 68, 118, 136, 236, 272, 472, 944, 1003, 1301, 2006, 2602, 4012, 5204, 8024, 10408, 16048, 20816, 22117, 44234, 76759, 88468, 153518, 176936, 307036, 353872, 614072, 1228144, 1304903, 2609806, 5219612, 10439224, 20878448]

約数ペア:

[(1, 20878448), (2, 10439224), (4, 5219612), (8, 2609806), (16, 1304903), (17, 1228144), (34, 614072), (59, 353872), (68, 307036), (118, 176936), (136, 153518), (236, 88468), (272, 76759), (472, 44234), (944, 22117), (1003, 20816), (1301, 16048), (2006, 10408), (2602, 8024), (4012, 5204)]