21721328

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43793}}^1$

素因数の和:43832

約数の個数: 20

約数和(自身を含む): 43443648

約数和(自身を除く): 21722320

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43793, 87586, 175172, 350344, 700688, 1357583, 2715166, 5430332, 10860664, 21721328]

約数ペア:

[(1, 21721328), (2, 10860664), (4, 5430332), (8, 2715166), (16, 1357583), (31, 700688), (62, 350344), (124, 175172), (248, 87586), (496, 43793)]