19291265125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{4481}}^1$

素因数の和:4639

約数の個数: 64

約数和(自身を含む): 27385952256

約数和(自身を除く): 8094687131

約数列:

[1, 5, 11, 25, 31, 55, 101, 125, 155, 275, 341, 505, 775, 1111, 1375, 1705, 2525, 3131, 3875, 4481, 5555, 8525, 12625, 15655, 22405, 27775, 34441, 42625, 49291, 78275, 112025, 138875, 138911, 172205, 246455, 391375, 452581, 560125, 694555, 861025, 1232275, 1528021, 2262905, 3472775, 4305125, 4978391, 6161375, 7640105, 11314525, 14030011, 17363875, 24891955, 38200525, 56572625, 70150055, 124459775, 154330121, 191002625, 350750275, 622298875, 771650605, 1753751375, 3858253025, 19291265125]

約数ペア:

[(1, 19291265125), (5, 3858253025), (11, 1753751375), (25, 771650605), (31, 622298875), (55, 350750275), (101, 191002625), (125, 154330121), (155, 124459775), (275, 70150055), (341, 56572625), (505, 38200525), (775, 24891955), (1111, 17363875), (1375, 14030011), (1705, 11314525), (2525, 7640105), (3131, 6161375), (3875, 4978391), (4481, 4305125), (5555, 3472775), (8525, 2262905), (12625, 1528021), (15655, 1232275), (22405, 861025), (27775, 694555), (34441, 560125), (42625, 452581), (49291, 391375), (78275, 246455), (112025, 172205), (138875, 138911)]