20179400

素因数分解:

$2^3\times 5^2\times {\mathrm{163}}^1\times {\mathrm{619}}^1$

素因数の和:798

約数の個数: 48

約数和(自身を含む): 47281200

約数和(自身を除く): 27101800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 163, 200, 326, 619, 652, 815, 1238, 1304, 1630, 2476, 3095, 3260, 4075, 4952, 6190, 6520, 8150, 12380, 15475, 16300, 24760, 30950, 32600, 61900, 100897, 123800, 201794, 403588, 504485, 807176, 1008970, 2017940, 2522425, 4035880, 5044850, 10089700, 20179400]

約数ペア:

[(1, 20179400), (2, 10089700), (4, 5044850), (5, 4035880), (8, 2522425), (10, 2017940), (20, 1008970), (25, 807176), (40, 504485), (50, 403588), (100, 201794), (163, 123800), (200, 100897), (326, 61900), (619, 32600), (652, 30950), (815, 24760), (1238, 16300), (1304, 15475), (1630, 12380), (2476, 8150), (3095, 6520), (3260, 6190), (4075, 4952)]