21326955

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{179}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 37946880

約数和(自身を除く): 16619925

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 141, 169, 179, 195, 235, 507, 537, 611, 705, 845, 895, 1833, 2327, 2535, 2685, 3055, 6981, 7943, 8413, 9165, 11635, 23829, 25239, 30251, 34905, 39715, 42065, 90753, 109369, 119145, 126195, 151255, 328107, 453765, 546845, 1421797, 1640535, 4265391, 7108985, 21326955]

約数ペア:

[(1, 21326955), (3, 7108985), (5, 4265391), (13, 1640535), (15, 1421797), (39, 546845), (47, 453765), (65, 328107), (141, 151255), (169, 126195), (179, 119145), (195, 109369), (235, 90753), (507, 42065), (537, 39715), (611, 34905), (705, 30251), (845, 25239), (895, 23829), (1833, 11635), (2327, 9165), (2535, 8413), (2685, 7943), (3055, 6981)]