78303980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{43991}}^1$

素因数の和:44089

約数の個数: 24

約数和(自身を含む): 166289760

約数和(自身を除く): 87985780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 43991, 87982, 175964, 219955, 439910, 879820, 3915199, 7830398, 15660796, 19575995, 39151990, 78303980]

約数ペア:

[(1, 78303980), (2, 39151990), (4, 19575995), (5, 15660796), (10, 7830398), (20, 3915199), (89, 879820), (178, 439910), (356, 219955), (445, 175964), (890, 87982), (1780, 43991)]