19963648

素因数分解:

$2^8\times {\mathrm{77983}}^1$

素因数の和:77999

約数の個数: 18

約数和(自身を含む): 39849824

約数和(自身を除く): 19886176

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 77983, 155966, 311932, 623864, 1247728, 2495456, 4990912, 9981824, 19963648]

約数ペア:

[(1, 19963648), (2, 9981824), (4, 4990912), (8, 2495456), (16, 1247728), (32, 623864), (64, 311932), (128, 155966), (256, 77983)]