28939755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 53706240

約数和(自身を除く): 24766485

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 73, 95, 107, 195, 219, 247, 285, 321, 365, 535, 741, 949, 1095, 1235, 1387, 1391, 1605, 2033, 2847, 3705, 4161, 4173, 4745, 6099, 6935, 6955, 7811, 10165, 14235, 18031, 20805, 20865, 23433, 26429, 30495, 39055, 54093, 79287, 90155, 101543, 117165, 132145, 148409, 270465, 304629, 396435, 445227, 507715, 742045, 1523145, 1929317, 2226135, 5787951, 9646585, 28939755]

約数ペア:

[(1, 28939755), (3, 9646585), (5, 5787951), (13, 2226135), (15, 1929317), (19, 1523145), (39, 742045), (57, 507715), (65, 445227), (73, 396435), (95, 304629), (107, 270465), (195, 148409), (219, 132145), (247, 117165), (285, 101543), (321, 90155), (365, 79287), (535, 54093), (741, 39055), (949, 30495), (1095, 26429), (1235, 23433), (1387, 20865), (1391, 20805), (1605, 18031), (2033, 14235), (2847, 10165), (3705, 7811), (4161, 6955), (4173, 6935), (4745, 6099)]