19812345

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{9931}}^1$

素因数の和:9965

約数の個数: 32

約数和(自身を含む): 38138880

約数和(自身を除く): 18326535

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 9931, 29793, 49655, 69517, 148965, 188689, 208551, 347585, 566067, 943445, 1042755, 1320823, 2830335, 3962469, 6604115, 19812345]

約数ペア:

[(1, 19812345), (3, 6604115), (5, 3962469), (7, 2830335), (15, 1320823), (19, 1042755), (21, 943445), (35, 566067), (57, 347585), (95, 208551), (105, 188689), (133, 148965), (285, 69517), (399, 49655), (665, 29793), (1995, 9931)]