13666840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:460

約数の個数: 64

約数和(自身を含む): 34020000

約数和(自身を除く): 20353160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 349, 356, 440, 445, 698, 712, 890, 979, 1396, 1745, 1780, 1958, 2792, 3490, 3560, 3839, 3916, 4895, 6980, 7678, 7832, 9790, 13960, 15356, 19195, 19580, 30712, 31061, 38390, 39160, 62122, 76780, 124244, 153560, 155305, 248488, 310610, 341671, 621220, 683342, 1242440, 1366684, 1708355, 2733368, 3416710, 6833420, 13666840]

約数ペア:

[(1, 13666840), (2, 6833420), (4, 3416710), (5, 2733368), (8, 1708355), (10, 1366684), (11, 1242440), (20, 683342), (22, 621220), (40, 341671), (44, 310610), (55, 248488), (88, 155305), (89, 153560), (110, 124244), (178, 76780), (220, 62122), (349, 39160), (356, 38390), (440, 31061), (445, 30712), (698, 19580), (712, 19195), (890, 15356), (979, 13960), (1396, 9790), (1745, 7832), (1780, 7678), (1958, 6980), (2792, 4895), (3490, 3916), (3560, 3839)]