1980996875

素因数分解:

$5^5\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1$

素因数の和:104

約数の個数: 108

約数和(自身を含む): 3042180288

約数和(自身を除く): 1061183413

約数列:

[1, 5, 11, 13, 25, 31, 55, 65, 121, 125, 143, 155, 169, 275, 325, 341, 403, 605, 625, 715, 775, 845, 1375, 1573, 1625, 1705, 1859, 2015, 3025, 3125, 3575, 3751, 3875, 4225, 4433, 5239, 6875, 7865, 8125, 8525, 9295, 10075, 15125, 17875, 18755, 19375, 20449, 21125, 22165, 26195, 34375, 39325, 40625, 42625, 46475, 48763, 50375, 57629, 75625, 89375, 93775, 96875, 102245, 105625, 110825, 130975, 196625, 213125, 232375, 243815, 251875, 288145, 378125, 446875, 468875, 511225, 528125, 554125, 633919, 654875, 983125, 1065625, 1161875, 1219075, 1259375, 1440725, 2344375, 2556125, 2770625, 3169595, 3274375, 4915625, 5809375, 6095375, 7203625, 11721875, 12780625, 13853125, 15847975, 16371875, 30476875, 36018125, 63903125, 79239875, 152384375, 180090625, 396199375, 1980996875]

約数ペア:

[(1, 1980996875), (5, 396199375), (11, 180090625), (13, 152384375), (25, 79239875), (31, 63903125), (55, 36018125), (65, 30476875), (121, 16371875), (125, 15847975), (143, 13853125), (155, 12780625), (169, 11721875), (275, 7203625), (325, 6095375), (341, 5809375), (403, 4915625), (605, 3274375), (625, 3169595), (715, 2770625), (775, 2556125), (845, 2344375), (1375, 1440725), (1573, 1259375), (1625, 1219075), (1705, 1161875), (1859, 1065625), (2015, 983125), (3025, 654875), (3125, 633919), (3575, 554125), (3751, 528125), (3875, 511225), (4225, 468875), (4433, 446875), (5239, 378125), (6875, 288145), (7865, 251875), (8125, 243815), (8525, 232375), (9295, 213125), (10075, 196625), (15125, 130975), (17875, 110825), (18755, 105625), (19375, 102245), (20449, 96875), (21125, 93775), (22165, 89375), (26195, 75625), (34375, 57629), (39325, 50375), (40625, 48763), (42625, 46475)]