28405930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{405799}}^1$

素因数の和:405813

約数の個数: 16

約数和(自身を含む): 58435200

約数和(自身を除く): 30029270

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 405799, 811598, 2028995, 2840593, 4057990, 5681186, 14202965, 28405930]

約数ペア:

[(1, 28405930), (2, 14202965), (5, 5681186), (7, 4057990), (10, 2840593), (14, 2028995), (35, 811598), (70, 405799)]