21391846

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{677}}^1$

素因数の和:784

約数の個数: 32

約数和(自身を含む): 38336832

約数和(自身を除く): 16944986

約数列:

[1, 2, 7, 14, 37, 61, 74, 122, 259, 427, 518, 677, 854, 1354, 2257, 4514, 4739, 9478, 15799, 25049, 31598, 41297, 50098, 82594, 175343, 289079, 350686, 578158, 1527989, 3055978, 10695923, 21391846]

約数ペア:

[(1, 21391846), (2, 10695923), (7, 3055978), (14, 1527989), (37, 578158), (61, 350686), (74, 289079), (122, 175343), (259, 82594), (427, 50098), (518, 41297), (677, 31598), (854, 25049), (1354, 15799), (2257, 9478), (4514, 4739)]