85671880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{305971}}^1$

素因数の和:305989

約数の個数: 32

約数和(自身を含む): 220299840

約数和(自身を除く): 134627960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 305971, 611942, 1223884, 1529855, 2141797, 2447768, 3059710, 4283594, 6119420, 8567188, 10708985, 12238840, 17134376, 21417970, 42835940, 85671880]

約数ペア:

[(1, 85671880), (2, 42835940), (4, 21417970), (5, 17134376), (7, 12238840), (8, 10708985), (10, 8567188), (14, 6119420), (20, 4283594), (28, 3059710), (35, 2447768), (40, 2141797), (56, 1529855), (70, 1223884), (140, 611942), (280, 305971)]