72123440

素因数分解:

$2^4\times 5^1\times {\mathrm{883}}^1\times {\mathrm{1021}}^1$

素因数の和:1917

約数の個数: 40

約数和(自身を含む): 168041328

約数和(自身を除く): 95917888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 883, 1021, 1766, 2042, 3532, 4084, 4415, 5105, 7064, 8168, 8830, 10210, 14128, 16336, 17660, 20420, 35320, 40840, 70640, 81680, 901543, 1803086, 3606172, 4507715, 7212344, 9015430, 14424688, 18030860, 36061720, 72123440]

約数ペア:

[(1, 72123440), (2, 36061720), (4, 18030860), (5, 14424688), (8, 9015430), (10, 7212344), (16, 4507715), (20, 3606172), (40, 1803086), (80, 901543), (883, 81680), (1021, 70640), (1766, 40840), (2042, 35320), (3532, 20420), (4084, 17660), (4415, 16336), (5105, 14128), (7064, 10210), (8168, 8830)]