9901473520

素因数分解:

$2^4\times 5^1\times {\mathrm{123768419}}^1$

素因数の和:123768432

約数の個数: 20

約数和(自身を含む): 23020926120

約数和(自身を除く): 13119452600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 123768419, 247536838, 495073676, 618842095, 990147352, 1237684190, 1980294704, 2475368380, 4950736760, 9901473520]

約数ペア:

[(1, 9901473520), (2, 4950736760), (4, 2475368380), (5, 1980294704), (8, 1237684190), (10, 990147352), (16, 618842095), (20, 495073676), (40, 247536838), (80, 123768419)]