21939248

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1021}}^1$

素因数の和:1125

約数の個数: 40

約数和(自身を含む): 45622080

約数和(自身を除く): 23682832

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 79, 136, 158, 272, 316, 632, 1021, 1264, 1343, 2042, 2686, 4084, 5372, 8168, 10744, 16336, 17357, 21488, 34714, 69428, 80659, 138856, 161318, 277712, 322636, 645272, 1290544, 1371203, 2742406, 5484812, 10969624, 21939248]

約数ペア:

[(1, 21939248), (2, 10969624), (4, 5484812), (8, 2742406), (16, 1371203), (17, 1290544), (34, 645272), (68, 322636), (79, 277712), (136, 161318), (158, 138856), (272, 80659), (316, 69428), (632, 34714), (1021, 21488), (1264, 17357), (1343, 16336), (2042, 10744), (2686, 8168), (4084, 5372)]