20992125

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{727}}^1$

素因数の和:763

約数の個数: 64

約数和(自身を含む): 43610112

約数和(自身を除く): 22617987

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 75, 77, 105, 125, 165, 175, 231, 275, 375, 385, 525, 727, 825, 875, 1155, 1375, 1925, 2181, 2625, 3635, 4125, 5089, 5775, 7997, 9625, 10905, 15267, 18175, 23991, 25445, 28875, 39985, 54525, 55979, 76335, 90875, 119955, 127225, 167937, 199925, 272625, 279895, 381675, 599775, 636125, 839685, 999625, 1399475, 1908375, 2998875, 4198425, 6997375, 20992125]

約数ペア:

[(1, 20992125), (3, 6997375), (5, 4198425), (7, 2998875), (11, 1908375), (15, 1399475), (21, 999625), (25, 839685), (33, 636125), (35, 599775), (55, 381675), (75, 279895), (77, 272625), (105, 199925), (125, 167937), (165, 127225), (175, 119955), (231, 90875), (275, 76335), (375, 55979), (385, 54525), (525, 39985), (727, 28875), (825, 25445), (875, 23991), (1155, 18175), (1375, 15267), (1925, 10905), (2181, 9625), (2625, 7997), (3635, 5775), (4125, 5089)]