21991690

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1213}}^1$

素因数の和:1271

約数の個数: 48

約数和(自身を含む): 47331432

約数和(自身を除く): 25339742

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 49, 70, 74, 98, 185, 245, 259, 370, 490, 518, 1213, 1295, 1813, 2426, 2590, 3626, 6065, 8491, 9065, 12130, 16982, 18130, 42455, 44881, 59437, 84910, 89762, 118874, 224405, 297185, 314167, 448810, 594370, 628334, 1570835, 2199169, 3141670, 4398338, 10995845, 21991690]

約数ペア:

[(1, 21991690), (2, 10995845), (5, 4398338), (7, 3141670), (10, 2199169), (14, 1570835), (35, 628334), (37, 594370), (49, 448810), (70, 314167), (74, 297185), (98, 224405), (185, 118874), (245, 89762), (259, 84910), (370, 59437), (490, 44881), (518, 42455), (1213, 18130), (1295, 16982), (1813, 12130), (2426, 9065), (2590, 8491), (3626, 6065)]