20404592

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{373}}^1$

素因数の和:657

約数の個数: 40

約数和(自身を含む): 42851424

約数和(自身を除く): 22446832

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 263, 373, 526, 746, 1052, 1492, 2104, 2984, 3419, 4208, 4849, 5968, 6838, 9698, 13676, 19396, 27352, 38792, 54704, 77584, 98099, 196198, 392396, 784792, 1275287, 1569584, 2550574, 5101148, 10202296, 20404592]

約数ペア:

[(1, 20404592), (2, 10202296), (4, 5101148), (8, 2550574), (13, 1569584), (16, 1275287), (26, 784792), (52, 392396), (104, 196198), (208, 98099), (263, 77584), (373, 54704), (526, 38792), (746, 27352), (1052, 19396), (1492, 13676), (2104, 9698), (2984, 6838), (3419, 5968), (4208, 4849)]