71428225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{491}}^1$

素因数の和:558

約数の個数: 36

約数和(自身を含む): 101212272

約数和(自身を除く): 29784047

約数列:

[1, 5, 11, 23, 25, 55, 115, 253, 275, 491, 529, 575, 1265, 2455, 2645, 5401, 5819, 6325, 11293, 12275, 13225, 27005, 29095, 56465, 124223, 135025, 145475, 259739, 282325, 621115, 1298695, 2857129, 3105575, 6493475, 14285645, 71428225]

約数ペア:

[(1, 71428225), (5, 14285645), (11, 6493475), (23, 3105575), (25, 2857129), (55, 1298695), (115, 621115), (253, 282325), (275, 259739), (491, 145475), (529, 135025), (575, 124223), (1265, 56465), (2455, 29095), (2645, 27005), (5401, 13225), (5819, 12275), (6325, 11293)]