19728485

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 8472475

約数列:

[1, 5, 7, 35, 47, 67, 179, 235, 329, 335, 469, 895, 1253, 1645, 2345, 3149, 6265, 8413, 11993, 15745, 22043, 42065, 58891, 59965, 83951, 110215, 294455, 419755, 563671, 2818355, 3945697, 19728485]

約数ペア:

[(1, 19728485), (5, 3945697), (7, 2818355), (35, 563671), (47, 419755), (67, 294455), (179, 110215), (235, 83951), (329, 59965), (335, 58891), (469, 42065), (895, 22043), (1253, 15745), (1645, 11993), (2345, 8413), (3149, 6265)]