78991780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{564227}}^1$

素因数の和:564243

約数の個数: 24

約数和(自身を含む): 189580608

約数和(自身を除く): 110588828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 564227, 1128454, 2256908, 2821135, 3949589, 5642270, 7899178, 11284540, 15798356, 19747945, 39495890, 78991780]

約数ペア:

[(1, 78991780), (2, 39495890), (4, 19747945), (5, 15798356), (7, 11284540), (10, 7899178), (14, 5642270), (20, 3949589), (28, 2821135), (35, 2256908), (70, 1128454), (140, 564227)]