31173680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20509}}^1$

素因数の和:20541

約数の個数: 40

約数和(自身を含む): 76297200

約数和(自身を除く): 45123520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 20509, 41018, 82036, 102545, 164072, 205090, 328144, 389671, 410180, 779342, 820360, 1558684, 1640720, 1948355, 3117368, 3896710, 6234736, 7793420, 15586840, 31173680]

約数ペア:

[(1, 31173680), (2, 15586840), (4, 7793420), (5, 6234736), (8, 3896710), (10, 3117368), (16, 1948355), (19, 1640720), (20, 1558684), (38, 820360), (40, 779342), (76, 410180), (80, 389671), (95, 328144), (152, 205090), (190, 164072), (304, 102545), (380, 82036), (760, 41018), (1520, 20509)]