18101840

素因数分解:

$2^4\times 5^1\times {\mathrm{353}}^1\times {\mathrm{641}}^1$

素因数の和:1007

約数の個数: 40

約数和(自身を含む): 42271848

約数和(自身を除く): 24170008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 353, 641, 706, 1282, 1412, 1765, 2564, 2824, 3205, 3530, 5128, 5648, 6410, 7060, 10256, 12820, 14120, 25640, 28240, 51280, 226273, 452546, 905092, 1131365, 1810184, 2262730, 3620368, 4525460, 9050920, 18101840]

約数ペア:

[(1, 18101840), (2, 9050920), (4, 4525460), (5, 3620368), (8, 2262730), (10, 1810184), (16, 1131365), (20, 905092), (40, 452546), (80, 226273), (353, 51280), (641, 28240), (706, 25640), (1282, 14120), (1412, 12820), (1765, 10256), (2564, 7060), (2824, 6410), (3205, 5648), (3530, 5128)]