20949968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2143}}^1$

素因数の和:2211

約数の個数: 40

約数和(自身を含む): 44663808

約数和(自身を除く): 23713840

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 188, 208, 376, 611, 752, 1222, 2143, 2444, 4286, 4888, 8572, 9776, 17144, 27859, 34288, 55718, 100721, 111436, 201442, 222872, 402884, 445744, 805768, 1309373, 1611536, 2618746, 5237492, 10474984, 20949968]

約数ペア:

[(1, 20949968), (2, 10474984), (4, 5237492), (8, 2618746), (13, 1611536), (16, 1309373), (26, 805768), (47, 445744), (52, 402884), (94, 222872), (104, 201442), (188, 111436), (208, 100721), (376, 55718), (611, 34288), (752, 27859), (1222, 17144), (2143, 9776), (2444, 8572), (4286, 4888)]