20844176

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{389}}^1$

素因数の和:611

約数の個数: 40

約数和(自身を含む): 43088760

約数和(自身を除く): 22244584

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 197, 272, 389, 394, 778, 788, 1556, 1576, 3112, 3152, 3349, 6224, 6613, 6698, 13226, 13396, 26452, 26792, 52904, 53584, 76633, 105808, 153266, 306532, 613064, 1226128, 1302761, 2605522, 5211044, 10422088, 20844176]

約数ペア:

[(1, 20844176), (2, 10422088), (4, 5211044), (8, 2605522), (16, 1302761), (17, 1226128), (34, 613064), (68, 306532), (136, 153266), (197, 105808), (272, 76633), (389, 53584), (394, 52904), (778, 26792), (788, 26452), (1556, 13396), (1576, 13226), (3112, 6698), (3152, 6613), (3349, 6224)]