78958480

素因数分解:

$2^4\times 5^1\times {\mathrm{986981}}^1$

素因数の和:986994

約数の個数: 20

約数和(自身を含む): 183578652

約数和(自身を除く): 104620172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986981, 1973962, 3947924, 4934905, 7895848, 9869810, 15791696, 19739620, 39479240, 78958480]

約数ペア:

[(1, 78958480), (2, 39479240), (4, 19739620), (5, 15791696), (8, 9869810), (10, 7895848), (16, 4934905), (20, 3947924), (40, 1973962), (80, 986981)]