20165624

素因数分解:

$2^3\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 40633560

約数和(自身を除く): 20467936

約数列:

[1, 2, 4, 8, 31, 43, 61, 62, 86, 122, 124, 172, 244, 248, 344, 488, 961, 1333, 1891, 1922, 2623, 2666, 3782, 3844, 5246, 5332, 7564, 7688, 10492, 10664, 15128, 20984, 41323, 58621, 81313, 82646, 117242, 162626, 165292, 234484, 325252, 330584, 468968, 650504, 2520703, 5041406, 10082812, 20165624]

約数ペア:

[(1, 20165624), (2, 10082812), (4, 5041406), (8, 2520703), (31, 650504), (43, 468968), (61, 330584), (62, 325252), (86, 234484), (122, 165292), (124, 162626), (172, 117242), (244, 82646), (248, 81313), (344, 58621), (488, 41323), (961, 20984), (1333, 15128), (1891, 10664), (1922, 10492), (2623, 7688), (2666, 7564), (3782, 5332), (3844, 5246)]