20023020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{643}}^1$

素因数の和:831

約数の個数: 72

約数和(自身を含む): 61182576

約数和(自身を除く): 41159556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 173, 180, 346, 519, 643, 692, 865, 1038, 1286, 1557, 1730, 1929, 2076, 2572, 2595, 3114, 3215, 3460, 3858, 5190, 5787, 6228, 6430, 7716, 7785, 9645, 10380, 11574, 12860, 15570, 19290, 23148, 28935, 31140, 38580, 57870, 111239, 115740, 222478, 333717, 444956, 556195, 667434, 1001151, 1112390, 1334868, 1668585, 2002302, 2224780, 3337170, 4004604, 5005755, 6674340, 10011510, 20023020]

約数ペア:

[(1, 20023020), (2, 10011510), (3, 6674340), (4, 5005755), (5, 4004604), (6, 3337170), (9, 2224780), (10, 2002302), (12, 1668585), (15, 1334868), (18, 1112390), (20, 1001151), (30, 667434), (36, 556195), (45, 444956), (60, 333717), (90, 222478), (173, 115740), (180, 111239), (346, 57870), (519, 38580), (643, 31140), (692, 28935), (865, 23148), (1038, 19290), (1286, 15570), (1557, 12860), (1730, 11574), (1929, 10380), (2076, 9645), (2572, 7785), (2595, 7716), (3114, 6430), (3215, 6228), (3460, 5787), (3858, 5190)]