21342820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62773}}^1$

素因数の和:62799

約数の個数: 24

約数和(自身を含む): 47457144

約数和(自身を除く): 26114324

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62773, 125546, 251092, 313865, 627730, 1067141, 1255460, 2134282, 4268564, 5335705, 10671410, 21342820]

約数ペア:

[(1, 21342820), (2, 10671410), (4, 5335705), (5, 4268564), (10, 2134282), (17, 1255460), (20, 1067141), (34, 627730), (68, 313865), (85, 251092), (170, 125546), (340, 62773)]