20144475

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 39809952

約数和(自身を除く): 19665477

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 71, 75, 97, 117, 195, 213, 225, 291, 325, 355, 485, 585, 639, 873, 923, 975, 1065, 1261, 1455, 1775, 2425, 2769, 2925, 3195, 3783, 4365, 4615, 5325, 6305, 6887, 7275, 8307, 11349, 13845, 15975, 18915, 20661, 21825, 23075, 31525, 34435, 41535, 56745, 61983, 69225, 89531, 94575, 103305, 172175, 207675, 268593, 283725, 309915, 447655, 516525, 805779, 1342965, 1549575, 2238275, 4028895, 6714825, 20144475]

約数ペア:

[(1, 20144475), (3, 6714825), (5, 4028895), (9, 2238275), (13, 1549575), (15, 1342965), (25, 805779), (39, 516525), (45, 447655), (65, 309915), (71, 283725), (75, 268593), (97, 207675), (117, 172175), (195, 103305), (213, 94575), (225, 89531), (291, 69225), (325, 61983), (355, 56745), (485, 41535), (585, 34435), (639, 31525), (873, 23075), (923, 21825), (975, 20661), (1065, 18915), (1261, 15975), (1455, 13845), (1775, 11349), (2425, 8307), (2769, 7275), (2925, 6887), (3195, 6305), (3783, 5325), (4365, 4615)]