21015664

素因数分解:

$2^4\times {\mathrm{563}}^1\times {\mathrm{2333}}^1$

素因数の和:2904

約数の個数: 20

約数和(自身を含む): 40807656

約数和(自身を除く): 19791992

約数列:

[1, 2, 4, 8, 16, 563, 1126, 2252, 2333, 4504, 4666, 9008, 9332, 18664, 37328, 1313479, 2626958, 5253916, 10507832, 21015664]

約数ペア:

[(1, 21015664), (2, 10507832), (4, 5253916), (8, 2626958), (16, 1313479), (563, 37328), (1126, 18664), (2252, 9332), (2333, 9008), (4504, 4666)]