21794320

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3061}}^1$

素因数の和:3163

約数の個数: 40

約数和(自身を含む): 51257880

約数和(自身を除く): 29463560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3061, 3560, 6122, 7120, 12244, 15305, 24488, 30610, 48976, 61220, 122440, 244880, 272429, 544858, 1089716, 1362145, 2179432, 2724290, 4358864, 5448580, 10897160, 21794320]

約数ペア:

[(1, 21794320), (2, 10897160), (4, 5448580), (5, 4358864), (8, 2724290), (10, 2179432), (16, 1362145), (20, 1089716), (40, 544858), (80, 272429), (89, 244880), (178, 122440), (356, 61220), (445, 48976), (712, 30610), (890, 24488), (1424, 15305), (1780, 12244), (3061, 7120), (3560, 6122)]