28747760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18913}}^1$

素因数の和:18945

約数の個数: 40

約数和(自身を含む): 70360080

約数和(自身を除く): 41612320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18913, 37826, 75652, 94565, 151304, 189130, 302608, 359347, 378260, 718694, 756520, 1437388, 1513040, 1796735, 2874776, 3593470, 5749552, 7186940, 14373880, 28747760]

約数ペア:

[(1, 28747760), (2, 14373880), (4, 7186940), (5, 5749552), (8, 3593470), (10, 2874776), (16, 1796735), (19, 1513040), (20, 1437388), (38, 756520), (40, 718694), (76, 378260), (80, 359347), (95, 302608), (152, 189130), (190, 151304), (304, 94565), (380, 75652), (760, 37826), (1520, 18913)]