81580140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5737}}^1$

素因数の和:5831

約数の個数: 72

約数和(自身を含む): 250635840

約数和(自身を除く): 169055700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1422, 1580, 2370, 2844, 3555, 4740, 5737, 7110, 11474, 14220, 17211, 22948, 28685, 34422, 51633, 57370, 68844, 86055, 103266, 114740, 172110, 206532, 258165, 344220, 453223, 516330, 906446, 1032660, 1359669, 1812892, 2266115, 2719338, 4079007, 4532230, 5438676, 6798345, 8158014, 9064460, 13596690, 16316028, 20395035, 27193380, 40790070, 81580140]

約数ペア:

[(1, 81580140), (2, 40790070), (3, 27193380), (4, 20395035), (5, 16316028), (6, 13596690), (9, 9064460), (10, 8158014), (12, 6798345), (15, 5438676), (18, 4532230), (20, 4079007), (30, 2719338), (36, 2266115), (45, 1812892), (60, 1359669), (79, 1032660), (90, 906446), (158, 516330), (180, 453223), (237, 344220), (316, 258165), (395, 206532), (474, 172110), (711, 114740), (790, 103266), (948, 86055), (1185, 68844), (1422, 57370), (1580, 51633), (2370, 34422), (2844, 28685), (3555, 22948), (4740, 17211), (5737, 14220), (7110, 11474)]