20817764

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 20550556

約数列:

[1, 2, 4, 11, 22, 44, 53, 79, 106, 113, 158, 212, 226, 316, 452, 583, 869, 1166, 1243, 1738, 2332, 2486, 3476, 4187, 4972, 5989, 8374, 8927, 11978, 16748, 17854, 23956, 35708, 46057, 65879, 92114, 98197, 131758, 184228, 196394, 263516, 392788, 473131, 946262, 1892524, 5204441, 10408882, 20817764]

約数ペア:

[(1, 20817764), (2, 10408882), (4, 5204441), (11, 1892524), (22, 946262), (44, 473131), (53, 392788), (79, 263516), (106, 196394), (113, 184228), (158, 131758), (212, 98197), (226, 92114), (316, 65879), (452, 46057), (583, 35708), (869, 23956), (1166, 17854), (1243, 16748), (1738, 11978), (2332, 8927), (2486, 8374), (3476, 5989), (4187, 4972)]