19516805

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{311}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 29472768

約数和(自身を除く): 9955963

約数列:

[1, 5, 7, 11, 35, 55, 77, 163, 311, 385, 815, 1141, 1555, 1793, 2177, 3421, 5705, 8965, 10885, 12551, 17105, 23947, 50693, 62755, 119735, 253465, 354851, 557623, 1774255, 2788115, 3903361, 19516805]

約数ペア:

[(1, 19516805), (5, 3903361), (7, 2788115), (11, 1774255), (35, 557623), (55, 354851), (77, 253465), (163, 119735), (311, 62755), (385, 50693), (815, 23947), (1141, 17105), (1555, 12551), (1793, 10885), (2177, 8965), (3421, 5705)]