21378716

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{3253}}^1$

素因数の和:3341

約数の個数: 24

約数和(自身を含む): 39360384

約数和(自身を除く): 17981668

約数列:

[1, 2, 4, 31, 53, 62, 106, 124, 212, 1643, 3253, 3286, 6506, 6572, 13012, 100843, 172409, 201686, 344818, 403372, 689636, 5344679, 10689358, 21378716]

約数ペア:

[(1, 21378716), (2, 10689358), (4, 5344679), (31, 689636), (53, 403372), (62, 344818), (106, 201686), (124, 172409), (212, 100843), (1643, 13012), (3253, 6572), (3286, 6506)]