19865888

素因数分解:

$2^5\times 7^1\times {\mathrm{131}}^1\times {\mathrm{677}}^1$

素因数の和:825

約数の個数: 48

約数和(自身を含む): 45105984

約数和(自身を除く): 25240096

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 131, 224, 262, 524, 677, 917, 1048, 1354, 1834, 2096, 2708, 3668, 4192, 4739, 5416, 7336, 9478, 10832, 14672, 18956, 21664, 29344, 37912, 75824, 88687, 151648, 177374, 354748, 620809, 709496, 1241618, 1418992, 2483236, 2837984, 4966472, 9932944, 19865888]

約数ペア:

[(1, 19865888), (2, 9932944), (4, 4966472), (7, 2837984), (8, 2483236), (14, 1418992), (16, 1241618), (28, 709496), (32, 620809), (56, 354748), (112, 177374), (131, 151648), (224, 88687), (262, 75824), (524, 37912), (677, 29344), (917, 21664), (1048, 18956), (1354, 14672), (1834, 10832), (2096, 9478), (2708, 7336), (3668, 5416), (4192, 4739)]