31720400

素因数分解:

$2^4\times 5^2\times {\mathrm{79301}}^1$

素因数の和:79319

約数の個数: 30

約数和(自身を含む): 76209222

約数和(自身を除く): 44488822

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 79301, 158602, 317204, 396505, 634408, 793010, 1268816, 1586020, 1982525, 3172040, 3965050, 6344080, 7930100, 15860200, 31720400]

約数ペア:

[(1, 31720400), (2, 15860200), (4, 7930100), (5, 6344080), (8, 3965050), (10, 3172040), (16, 1982525), (20, 1586020), (25, 1268816), (40, 793010), (50, 634408), (80, 396505), (100, 317204), (200, 158602), (400, 79301)]