21801968

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2473}}^1$

素因数の和:2529

約数の個数: 40

約数和(自身を含む): 46016400

約数和(自身を除く): 24214432

約数列:

[1, 2, 4, 8, 16, 19, 29, 38, 58, 76, 116, 152, 232, 304, 464, 551, 1102, 2204, 2473, 4408, 4946, 8816, 9892, 19784, 39568, 46987, 71717, 93974, 143434, 187948, 286868, 375896, 573736, 751792, 1147472, 1362623, 2725246, 5450492, 10900984, 21801968]

約数ペア:

[(1, 21801968), (2, 10900984), (4, 5450492), (8, 2725246), (16, 1362623), (19, 1147472), (29, 751792), (38, 573736), (58, 375896), (76, 286868), (116, 187948), (152, 143434), (232, 93974), (304, 71717), (464, 46987), (551, 39568), (1102, 19784), (2204, 9892), (2473, 8816), (4408, 4946)]