21398912

素因数分解:

$2^7\times {\mathrm{47}}^1\times {\mathrm{3557}}^1$

素因数の和:3618

約数の個数: 32

約数和(自身を含む): 43549920

約数和(自身を除く): 22151008

約数列:

[1, 2, 4, 8, 16, 32, 47, 64, 94, 128, 188, 376, 752, 1504, 3008, 3557, 6016, 7114, 14228, 28456, 56912, 113824, 167179, 227648, 334358, 455296, 668716, 1337432, 2674864, 5349728, 10699456, 21398912]

約数ペア:

[(1, 21398912), (2, 10699456), (4, 5349728), (8, 2674864), (16, 1337432), (32, 668716), (47, 455296), (64, 334358), (94, 227648), (128, 167179), (188, 113824), (376, 56912), (752, 28456), (1504, 14228), (3008, 7114), (3557, 6016)]