18979328

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{1951}}^1$

素因数の和:1988

約数の個数: 40

約数和(自身を含む): 39937920

約数和(自身を除く): 20958592

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 512, 608, 1216, 1951, 2432, 3902, 4864, 7804, 9728, 15608, 31216, 37069, 62432, 74138, 124864, 148276, 249728, 296552, 499456, 593104, 998912, 1186208, 2372416, 4744832, 9489664, 18979328]

約数ペア:

[(1, 18979328), (2, 9489664), (4, 4744832), (8, 2372416), (16, 1186208), (19, 998912), (32, 593104), (38, 499456), (64, 296552), (76, 249728), (128, 148276), (152, 124864), (256, 74138), (304, 62432), (512, 37069), (608, 31216), (1216, 15608), (1951, 9728), (2432, 7804), (3902, 4864)]