18526840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:332

約数の個数: 64

約数和(自身を含む): 43868160

約数和(自身を除く): 25341320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 67, 124, 134, 155, 223, 248, 268, 310, 335, 446, 536, 620, 670, 892, 1115, 1240, 1340, 1784, 2077, 2230, 2680, 4154, 4460, 6913, 8308, 8920, 10385, 13826, 14941, 16616, 20770, 27652, 29882, 34565, 41540, 55304, 59764, 69130, 74705, 83080, 119528, 138260, 149410, 276520, 298820, 463171, 597640, 926342, 1852684, 2315855, 3705368, 4631710, 9263420, 18526840]

約数ペア:

[(1, 18526840), (2, 9263420), (4, 4631710), (5, 3705368), (8, 2315855), (10, 1852684), (20, 926342), (31, 597640), (40, 463171), (62, 298820), (67, 276520), (124, 149410), (134, 138260), (155, 119528), (223, 83080), (248, 74705), (268, 69130), (310, 59764), (335, 55304), (446, 41540), (536, 34565), (620, 29882), (670, 27652), (892, 20770), (1115, 16616), (1240, 14941), (1340, 13826), (1784, 10385), (2077, 8920), (2230, 8308), (2680, 6913), (4154, 4460)]