21344656

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{809}}^1$

素因数の和:931

約数の個数: 40

約数和(自身を含む): 44294040

約数和(自身を除く): 22949384

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 97, 136, 194, 272, 388, 776, 809, 1552, 1618, 1649, 3236, 3298, 6472, 6596, 12944, 13192, 13753, 26384, 27506, 55012, 78473, 110024, 156946, 220048, 313892, 627784, 1255568, 1334041, 2668082, 5336164, 10672328, 21344656]

約数ペア:

[(1, 21344656), (2, 10672328), (4, 5336164), (8, 2668082), (16, 1334041), (17, 1255568), (34, 627784), (68, 313892), (97, 220048), (136, 156946), (194, 110024), (272, 78473), (388, 55012), (776, 27506), (809, 26384), (1552, 13753), (1618, 13192), (1649, 12944), (3236, 6596), (3298, 6472)]