21404336

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:597

約数の個数: 40

約数和(自身を含む): 44007600

約数和(自身を除く): 22603264

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 181, 304, 362, 389, 724, 778, 1448, 1556, 2896, 3112, 3439, 6224, 6878, 7391, 13756, 14782, 27512, 29564, 55024, 59128, 70409, 118256, 140818, 281636, 563272, 1126544, 1337771, 2675542, 5351084, 10702168, 21404336]

約数ペア:

[(1, 21404336), (2, 10702168), (4, 5351084), (8, 2675542), (16, 1337771), (19, 1126544), (38, 563272), (76, 281636), (152, 140818), (181, 118256), (304, 70409), (362, 59128), (389, 55024), (724, 29564), (778, 27512), (1448, 14782), (1556, 13756), (2896, 7391), (3112, 6878), (3439, 6224)]