21309490

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{373}}^1$

素因数の和:606

約数の個数: 32

約数和(自身を含む): 39988080

約数和(自身を除く): 18678590

約数列:

[1, 2, 5, 10, 29, 58, 145, 197, 290, 373, 394, 746, 985, 1865, 1970, 3730, 5713, 10817, 11426, 21634, 28565, 54085, 57130, 73481, 108170, 146962, 367405, 734810, 2130949, 4261898, 10654745, 21309490]

約数ペア:

[(1, 21309490), (2, 10654745), (5, 4261898), (10, 2130949), (29, 734810), (58, 367405), (145, 146962), (197, 108170), (290, 73481), (373, 57130), (394, 54085), (746, 28565), (985, 21634), (1865, 11426), (1970, 10817), (3730, 5713)]