21243984

素因数分解:

$2^4\times 3^1\times {\mathrm{157}}^1\times {\mathrm{2819}}^1$

素因数の和:2987

約数の個数: 40

約数和(自身を含む): 55249440

約数和(自身を除く): 34005456

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 157, 314, 471, 628, 942, 1256, 1884, 2512, 2819, 3768, 5638, 7536, 8457, 11276, 16914, 22552, 33828, 45104, 67656, 135312, 442583, 885166, 1327749, 1770332, 2655498, 3540664, 5310996, 7081328, 10621992, 21243984]

約数ペア:

[(1, 21243984), (2, 10621992), (3, 7081328), (4, 5310996), (6, 3540664), (8, 2655498), (12, 1770332), (16, 1327749), (24, 885166), (48, 442583), (157, 135312), (314, 67656), (471, 45104), (628, 33828), (942, 22552), (1256, 16914), (1884, 11276), (2512, 8457), (2819, 7536), (3768, 5638)]