123021280

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{17881}}^1$

素因数の和:17939

約数の個数: 48

約数和(自身を含む): 297413424

約数和(自身を除く): 174392144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 3440, 6880, 17881, 35762, 71524, 89405, 143048, 178810, 286096, 357620, 572192, 715240, 768883, 1430480, 1537766, 2860960, 3075532, 3844415, 6151064, 7688830, 12302128, 15377660, 24604256, 30755320, 61510640, 123021280]

約数ペア:

[(1, 123021280), (2, 61510640), (4, 30755320), (5, 24604256), (8, 15377660), (10, 12302128), (16, 7688830), (20, 6151064), (32, 3844415), (40, 3075532), (43, 2860960), (80, 1537766), (86, 1430480), (160, 768883), (172, 715240), (215, 572192), (344, 357620), (430, 286096), (688, 178810), (860, 143048), (1376, 89405), (1720, 71524), (3440, 35762), (6880, 17881)]