21017200

素因数分解:

$2^4\times 5^2\times {\mathrm{52543}}^1$

素因数の和:52561

約数の個数: 30

約数和(自身を含む): 50494784

約数和(自身を除く): 29477584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52543, 105086, 210172, 262715, 420344, 525430, 840688, 1050860, 1313575, 2101720, 2627150, 4203440, 5254300, 10508600, 21017200]

約数ペア:

[(1, 21017200), (2, 10508600), (4, 5254300), (5, 4203440), (8, 2627150), (10, 2101720), (16, 1313575), (20, 1050860), (25, 840688), (40, 525430), (50, 420344), (80, 262715), (100, 210172), (200, 105086), (400, 52543)]