28011815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{457}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 38779776

約数和(自身を除く): 10767961

約数列:

[1, 5, 13, 23, 41, 65, 115, 205, 299, 457, 533, 943, 1495, 2285, 2665, 4715, 5941, 10511, 12259, 18737, 29705, 52555, 61295, 93685, 136643, 243581, 430951, 683215, 1217905, 2154755, 5602363, 28011815]

約数ペア:

[(1, 28011815), (5, 5602363), (13, 2154755), (23, 1217905), (41, 683215), (65, 430951), (115, 243581), (205, 136643), (299, 93685), (457, 61295), (533, 52555), (943, 29705), (1495, 18737), (2285, 12259), (2665, 10511), (4715, 5941)]