19779320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{44953}}^1$

素因数の和:44975

約数の個数: 32

約数和(自身を含む): 48550320

約数和(自身を除く): 28771000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 44953, 89906, 179812, 224765, 359624, 449530, 494483, 899060, 988966, 1798120, 1977932, 2472415, 3955864, 4944830, 9889660, 19779320]

約数ペア:

[(1, 19779320), (2, 9889660), (4, 4944830), (5, 3955864), (8, 2472415), (10, 1977932), (11, 1798120), (20, 988966), (22, 899060), (40, 494483), (44, 449530), (55, 359624), (88, 224765), (110, 179812), (220, 89906), (440, 44953)]