20246875

素因数分解:

$5^5\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:86

約数の個数: 48

約数和(自身を含む): 29998080

約数和(自身を除く): 9751205

約数列:

[1, 5, 11, 19, 25, 31, 55, 95, 125, 155, 209, 275, 341, 475, 589, 625, 775, 1045, 1375, 1705, 2375, 2945, 3125, 3875, 5225, 6479, 6875, 8525, 11875, 14725, 19375, 26125, 32395, 34375, 42625, 59375, 73625, 96875, 130625, 161975, 213125, 368125, 653125, 809875, 1065625, 1840625, 4049375, 20246875]

約数ペア:

[(1, 20246875), (5, 4049375), (11, 1840625), (19, 1065625), (25, 809875), (31, 653125), (55, 368125), (95, 213125), (125, 161975), (155, 130625), (209, 96875), (275, 73625), (341, 59375), (475, 42625), (589, 34375), (625, 32395), (775, 26125), (1045, 19375), (1375, 14725), (1705, 11875), (2375, 8525), (2945, 6875), (3125, 6479), (3875, 5225)]