20469105

素因数分解:

$3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{991}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 18528399

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 243, 255, 405, 459, 765, 991, 1215, 1377, 2295, 2973, 4131, 4955, 6885, 8919, 14865, 16847, 20655, 26757, 44595, 50541, 80271, 84235, 133785, 151623, 240813, 252705, 401355, 454869, 758115, 1204065, 1364607, 2274345, 4093821, 6823035, 20469105]

約数ペア:

[(1, 20469105), (3, 6823035), (5, 4093821), (9, 2274345), (15, 1364607), (17, 1204065), (27, 758115), (45, 454869), (51, 401355), (81, 252705), (85, 240813), (135, 151623), (153, 133785), (243, 84235), (255, 80271), (405, 50541), (459, 44595), (765, 26757), (991, 20655), (1215, 16847), (1377, 14865), (2295, 8919), (2973, 6885), (4131, 4955)]