21405294

素因数分解:

$2^1\times 3^2\times {\mathrm{67}}^1\times {\mathrm{17749}}^1$

素因数の和:17824

約数の個数: 24

約数和(自身を含む): 47073000

約数和(自身を除く): 25667706

約数列:

[1, 2, 3, 6, 9, 18, 67, 134, 201, 402, 603, 1206, 17749, 35498, 53247, 106494, 159741, 319482, 1189183, 2378366, 3567549, 7135098, 10702647, 21405294]

約数ペア:

[(1, 21405294), (2, 10702647), (3, 7135098), (6, 3567549), (9, 2378366), (18, 1189183), (67, 319482), (134, 159741), (201, 106494), (402, 53247), (603, 35498), (1206, 17749)]