21242704

素因数分解:

$2^4\times 7^1\times {\mathrm{241}}^1\times {\mathrm{787}}^1$

素因数の和:1043

約数の個数: 40

約数和(自身を含む): 47292608

約数和(自身を除く): 26049904

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 241, 482, 787, 964, 1574, 1687, 1928, 3148, 3374, 3856, 5509, 6296, 6748, 11018, 12592, 13496, 22036, 26992, 44072, 88144, 189667, 379334, 758668, 1327669, 1517336, 2655338, 3034672, 5310676, 10621352, 21242704]

約数ペア:

[(1, 21242704), (2, 10621352), (4, 5310676), (7, 3034672), (8, 2655338), (14, 1517336), (16, 1327669), (28, 758668), (56, 379334), (112, 189667), (241, 88144), (482, 44072), (787, 26992), (964, 22036), (1574, 13496), (1687, 12592), (1928, 11018), (3148, 6748), (3374, 6296), (3856, 5509)]