20016400

素因数分解:

$2^4\times 5^2\times {\mathrm{163}}^1\times {\mathrm{307}}^1$

素因数の和:488

約数の個数: 60

約数和(自身を含む): 48542032

約数和(自身を除く): 28525632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 163, 200, 307, 326, 400, 614, 652, 815, 1228, 1304, 1535, 1630, 2456, 2608, 3070, 3260, 4075, 4912, 6140, 6520, 7675, 8150, 12280, 13040, 15350, 16300, 24560, 30700, 32600, 50041, 61400, 65200, 100082, 122800, 200164, 250205, 400328, 500410, 800656, 1000820, 1251025, 2001640, 2502050, 4003280, 5004100, 10008200, 20016400]

約数ペア:

[(1, 20016400), (2, 10008200), (4, 5004100), (5, 4003280), (8, 2502050), (10, 2001640), (16, 1251025), (20, 1000820), (25, 800656), (40, 500410), (50, 400328), (80, 250205), (100, 200164), (163, 122800), (200, 100082), (307, 65200), (326, 61400), (400, 50041), (614, 32600), (652, 30700), (815, 24560), (1228, 16300), (1304, 15350), (1535, 13040), (1630, 12280), (2456, 8150), (2608, 7675), (3070, 6520), (3260, 6140), (4075, 4912)]