21449308

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{5171}}^1$

素因数の和:5253

約数の個数: 24

約数和(自身を含む): 40403664

約数和(自身を除く): 18954356

約数列:

[1, 2, 4, 17, 34, 61, 68, 122, 244, 1037, 2074, 4148, 5171, 10342, 20684, 87907, 175814, 315431, 351628, 630862, 1261724, 5362327, 10724654, 21449308]

約数ペア:

[(1, 21449308), (2, 10724654), (4, 5362327), (17, 1261724), (34, 630862), (61, 351628), (68, 315431), (122, 175814), (244, 87907), (1037, 20684), (2074, 10342), (4148, 5171)]