20780914

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5867}}^1$

素因数の和:5910

約数の個数: 32

約数和(自身を含む): 40559616

約数和(自身を除く): 19778702

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 77, 154, 161, 253, 322, 506, 1771, 3542, 5867, 11734, 41069, 64537, 82138, 129074, 134941, 269882, 451759, 903518, 944587, 1484351, 1889174, 2968702, 10390457, 20780914]

約数ペア:

[(1, 20780914), (2, 10390457), (7, 2968702), (11, 1889174), (14, 1484351), (22, 944587), (23, 903518), (46, 451759), (77, 269882), (154, 134941), (161, 129074), (253, 82138), (322, 64537), (506, 41069), (1771, 11734), (3542, 5867)]