211701320

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{8231}}^1$

素因数の和:8885

約数の個数: 32

約数和(自身を含む): 477126720

約数和(自身を除く): 265425400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 8231, 12860, 16462, 25720, 32924, 41155, 65848, 82310, 164620, 329240, 5292533, 10585066, 21170132, 26462665, 42340264, 52925330, 105850660, 211701320]

約数ペア:

[(1, 211701320), (2, 105850660), (4, 52925330), (5, 42340264), (8, 26462665), (10, 21170132), (20, 10585066), (40, 5292533), (643, 329240), (1286, 164620), (2572, 82310), (3215, 65848), (5144, 41155), (6430, 32924), (8231, 25720), (12860, 16462)]