19689985

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1021}}^1$

素因数の和:1081

約数の個数: 32

約数和(自身を含む): 29433600

約数和(自身を除く): 9743615

約数列:

[1, 5, 7, 19, 29, 35, 95, 133, 145, 203, 551, 665, 1015, 1021, 2755, 3857, 5105, 7147, 19285, 19399, 29609, 35735, 96995, 135793, 148045, 207263, 562571, 678965, 1036315, 2812855, 3937997, 19689985]

約数ペア:

[(1, 19689985), (5, 3937997), (7, 2812855), (19, 1036315), (29, 678965), (35, 562571), (95, 207263), (133, 148045), (145, 135793), (203, 96995), (551, 35735), (665, 29609), (1015, 19399), (1021, 19285), (2755, 7147), (3857, 5105)]