4049375

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 40

約数和(自身を含む): 5998080

約数和(自身を除く): 1948705

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, 3875, 5225, 6479, 6875, 8525, 11875, 14725, 19375, 26125, 32395, 42625, 73625, 130625, 161975, 213125, 368125, 809875, 4049375]

約数ペア:

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