20719432

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{349}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 40131000

約数和(自身を除く): 19411568

約数列:

[1, 2, 4, 8, 41, 82, 164, 181, 328, 349, 362, 698, 724, 1396, 1448, 2792, 7421, 14309, 14842, 28618, 29684, 57236, 59368, 63169, 114472, 126338, 252676, 505352, 2589929, 5179858, 10359716, 20719432]

約数ペア:

[(1, 20719432), (2, 10359716), (4, 5179858), (8, 2589929), (41, 505352), (82, 252676), (164, 126338), (181, 114472), (328, 63169), (349, 59368), (362, 57236), (698, 29684), (724, 28618), (1396, 14842), (1448, 14309), (2792, 7421)]