81871980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{1364533}}^1$

素因数の和:1364545

約数の個数: 24

約数和(自身を含む): 229241712

約数和(自身を除く): 147369732

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1364533, 2729066, 4093599, 5458132, 6822665, 8187198, 13645330, 16374396, 20467995, 27290660, 40935990, 81871980]

約数ペア:

[(1, 81871980), (2, 40935990), (3, 27290660), (4, 20467995), (5, 16374396), (6, 13645330), (10, 8187198), (12, 6822665), (15, 5458132), (20, 4093599), (30, 2729066), (60, 1364533)]