20104784

素因数分解:

$2^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2459}}^1$

素因数の和:2547

約数の個数: 40

約数和(自身を含む): 45145920

約数和(自身を除く): 25041136

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 73, 112, 146, 292, 511, 584, 1022, 1168, 2044, 2459, 4088, 4918, 8176, 9836, 17213, 19672, 34426, 39344, 68852, 137704, 179507, 275408, 359014, 718028, 1256549, 1436056, 2513098, 2872112, 5026196, 10052392, 20104784]

約数ペア:

[(1, 20104784), (2, 10052392), (4, 5026196), (7, 2872112), (8, 2513098), (14, 1436056), (16, 1256549), (28, 718028), (56, 359014), (73, 275408), (112, 179507), (146, 137704), (292, 68852), (511, 39344), (584, 34426), (1022, 19672), (1168, 17213), (2044, 9836), (2459, 8176), (4088, 4918)]