210801680

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{10253}}^1$

素因数の和:10523

約数の個数: 40

約数和(自身を含む): 492068952

約数和(自身を除く): 281267272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 514, 1028, 1285, 2056, 2570, 4112, 5140, 10253, 10280, 20506, 20560, 41012, 51265, 82024, 102530, 164048, 205060, 410120, 820240, 2635021, 5270042, 10540084, 13175105, 21080168, 26350210, 42160336, 52700420, 105400840, 210801680]

約数ペア:

[(1, 210801680), (2, 105400840), (4, 52700420), (5, 42160336), (8, 26350210), (10, 21080168), (16, 13175105), (20, 10540084), (40, 5270042), (80, 2635021), (257, 820240), (514, 410120), (1028, 205060), (1285, 164048), (2056, 102530), (2570, 82024), (4112, 51265), (5140, 41012), (10253, 20560), (10280, 20506)]