4327880

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{421}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 9798840

約数和(自身を除く): 5470960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 421, 514, 842, 1028, 1285, 1684, 2056, 2105, 2570, 3368, 4210, 5140, 8420, 10280, 16840, 108197, 216394, 432788, 540985, 865576, 1081970, 2163940, 4327880]

約数ペア:

[(1, 4327880), (2, 2163940), (4, 1081970), (5, 865576), (8, 540985), (10, 432788), (20, 216394), (40, 108197), (257, 16840), (421, 10280), (514, 8420), (842, 5140), (1028, 4210), (1285, 3368), (1684, 2570), (2056, 2105)]