19991930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{285599}}^1$

素因数の和:285613

約数の個数: 16

約数和(自身を含む): 41126400

約数和(自身を除く): 21134470

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 285599, 571198, 1427995, 1999193, 2855990, 3998386, 9995965, 19991930]

約数ペア:

[(1, 19991930), (2, 9995965), (5, 3998386), (7, 2855990), (10, 1999193), (14, 1427995), (35, 571198), (70, 285599)]