21031607984

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{373}}^1\times {\mathrm{185477}}^1$

素因数の和:185877

約数の個数: 40

約数和(自身を含む): 43008638640

約数和(自身を除く): 21977030656

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 373, 746, 1492, 2984, 5968, 7087, 14174, 28348, 56696, 113392, 185477, 370954, 741908, 1483816, 2967632, 3524063, 7048126, 14096252, 28192504, 56385008, 69182921, 138365842, 276731684, 553463368, 1106926736, 1314475499, 2628950998, 5257901996, 10515803992, 21031607984]

約数ペア:

[(1, 21031607984), (2, 10515803992), (4, 5257901996), (8, 2628950998), (16, 1314475499), (19, 1106926736), (38, 553463368), (76, 276731684), (152, 138365842), (304, 69182921), (373, 56385008), (746, 28192504), (1492, 14096252), (2984, 7048126), (5968, 3524063), (7087, 2967632), (14174, 1483816), (28348, 741908), (56696, 370954), (113392, 185477)]