20128486

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2441}}^1$

素因数の和:2500

約数の個数: 32

約数和(自身を含む): 37509120

約数和(自身を除く): 17380634

約数列:

[1, 2, 7, 14, 19, 31, 38, 62, 133, 217, 266, 434, 589, 1178, 2441, 4123, 4882, 8246, 17087, 34174, 46379, 75671, 92758, 151342, 324653, 529697, 649306, 1059394, 1437749, 2875498, 10064243, 20128486]

約数ペア:

[(1, 20128486), (2, 10064243), (7, 2875498), (14, 1437749), (19, 1059394), (31, 649306), (38, 529697), (62, 324653), (133, 151342), (217, 92758), (266, 75671), (434, 46379), (589, 34174), (1178, 17087), (2441, 8246), (4123, 4882)]