168275320

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{6563}}^1$

素因数の和:7215

約数の個数: 32

約数和(自身を含む): 379267920

約数和(自身を除く): 210992600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 5128, 6410, 6563, 12820, 13126, 25640, 26252, 32815, 52504, 65630, 131260, 262520, 4206883, 8413766, 16827532, 21034415, 33655064, 42068830, 84137660, 168275320]

約数ペア:

[(1, 168275320), (2, 84137660), (4, 42068830), (5, 33655064), (8, 21034415), (10, 16827532), (20, 8413766), (40, 4206883), (641, 262520), (1282, 131260), (2564, 65630), (3205, 52504), (5128, 32815), (6410, 26252), (6563, 25640), (12820, 13126)]