15899751

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{359}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 28454400

約数和(自身を除く): 12554649

約数列:

[1, 3, 7, 9, 19, 21, 37, 57, 63, 111, 133, 171, 259, 333, 359, 399, 703, 777, 1077, 1197, 2109, 2331, 2513, 3231, 4921, 6327, 6821, 7539, 13283, 14763, 20463, 22617, 39849, 44289, 47747, 61389, 92981, 119547, 143241, 252377, 278943, 429723, 757131, 836829, 1766639, 2271393, 5299917, 15899751]

約数ペア:

[(1, 15899751), (3, 5299917), (7, 2271393), (9, 1766639), (19, 836829), (21, 757131), (37, 429723), (57, 278943), (63, 252377), (111, 143241), (133, 119547), (171, 92981), (259, 61389), (333, 47747), (359, 44289), (399, 39849), (703, 22617), (777, 20463), (1077, 14763), (1197, 13283), (2109, 7539), (2331, 6821), (2513, 6327), (3231, 4921)]