21821408

素因数分解:

$2^5\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1597}}^1$

素因数の和:1675

約数の個数: 48

約数和(自身を含む): 49934304

約数和(自身を除く): 28112896

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 61, 112, 122, 224, 244, 427, 488, 854, 976, 1597, 1708, 1952, 3194, 3416, 6388, 6832, 11179, 12776, 13664, 22358, 25552, 44716, 51104, 89432, 97417, 178864, 194834, 357728, 389668, 681919, 779336, 1363838, 1558672, 2727676, 3117344, 5455352, 10910704, 21821408]

約数ペア:

[(1, 21821408), (2, 10910704), (4, 5455352), (7, 3117344), (8, 2727676), (14, 1558672), (16, 1363838), (28, 779336), (32, 681919), (56, 389668), (61, 357728), (112, 194834), (122, 178864), (224, 97417), (244, 89432), (427, 51104), (488, 44716), (854, 25552), (976, 22358), (1597, 13664), (1708, 12776), (1952, 11179), (3194, 6832), (3416, 6388)]