21129584

素因数分解:

$2^4\times 7^2\times {\mathrm{26951}}^1$

素因数の和:26973

約数の個数: 30

約数和(自身を含む): 47624184

約数和(自身を除く): 26494600

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784, 26951, 53902, 107804, 188657, 215608, 377314, 431216, 754628, 1320599, 1509256, 2641198, 3018512, 5282396, 10564792, 21129584]

約数ペア:

[(1, 21129584), (2, 10564792), (4, 5282396), (7, 3018512), (8, 2641198), (14, 1509256), (16, 1320599), (28, 754628), (49, 431216), (56, 377314), (98, 215608), (112, 188657), (196, 107804), (392, 53902), (784, 26951)]