20244025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 29462400

約数和(自身を除く): 9218375

約数列:

[1, 5, 17, 19, 23, 25, 85, 95, 109, 115, 323, 391, 425, 437, 475, 545, 575, 1615, 1853, 1955, 2071, 2185, 2507, 2725, 7429, 8075, 9265, 9775, 10355, 10925, 12535, 35207, 37145, 42619, 46325, 47633, 51775, 62675, 176035, 185725, 213095, 238165, 809761, 880175, 1065475, 1190825, 4048805, 20244025]

約数ペア:

[(1, 20244025), (5, 4048805), (17, 1190825), (19, 1065475), (23, 880175), (25, 809761), (85, 238165), (95, 213095), (109, 185725), (115, 176035), (323, 62675), (391, 51775), (425, 47633), (437, 46325), (475, 42619), (545, 37145), (575, 35207), (1615, 12535), (1853, 10925), (1955, 10355), (2071, 9775), (2185, 9265), (2507, 8075), (2725, 7429)]