291217644940

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{22645229}}^1$

素因数の和:22645881

約数の個数: 24

約数和(自身を含む): 612508181040

約数和(自身を除く): 321290536100

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2572, 3215, 6430, 12860, 22645229, 45290458, 90580916, 113226145, 226452290, 452904580, 14560882247, 29121764494, 58243528988, 72804411235, 145608822470, 291217644940]

約数ペア:

[(1, 291217644940), (2, 145608822470), (4, 72804411235), (5, 58243528988), (10, 29121764494), (20, 14560882247), (643, 452904580), (1286, 226452290), (2572, 113226145), (3215, 90580916), (6430, 45290458), (12860, 22645229)]