19416520

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1153}}^1$

素因数の和:1585

約数の個数: 32

約数和(自身を含む): 43828920

約数和(自身を除く): 24412400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1153, 1684, 2105, 2306, 3368, 4210, 4612, 5765, 8420, 9224, 11530, 16840, 23060, 46120, 485413, 970826, 1941652, 2427065, 3883304, 4854130, 9708260, 19416520]

約数ペア:

[(1, 19416520), (2, 9708260), (4, 4854130), (5, 3883304), (8, 2427065), (10, 1941652), (20, 970826), (40, 485413), (421, 46120), (842, 23060), (1153, 16840), (1684, 11530), (2105, 9224), (2306, 8420), (3368, 5765), (4210, 4612)]