20686580

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{373}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 24552460

約数列:

[1, 2, 4, 5, 10, 20, 47, 59, 94, 118, 188, 235, 236, 295, 373, 470, 590, 746, 940, 1180, 1492, 1865, 2773, 3730, 5546, 7460, 11092, 13865, 17531, 22007, 27730, 35062, 44014, 55460, 70124, 87655, 88028, 110035, 175310, 220070, 350620, 440140, 1034329, 2068658, 4137316, 5171645, 10343290, 20686580]

約数ペア:

[(1, 20686580), (2, 10343290), (4, 5171645), (5, 4137316), (10, 2068658), (20, 1034329), (47, 440140), (59, 350620), (94, 220070), (118, 175310), (188, 110035), (235, 88028), (236, 87655), (295, 70124), (373, 55460), (470, 44014), (590, 35062), (746, 27730), (940, 22007), (1180, 17531), (1492, 13865), (1865, 11092), (2773, 7460), (3730, 5546)]