21080468

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{199}}^1\times {\mathrm{373}}^1$

素因数の和:647

約数の個数: 24

約数和(自身を含む): 37699200

約数和(自身を除く): 16618732

約数列:

[1, 2, 4, 71, 142, 199, 284, 373, 398, 746, 796, 1492, 14129, 26483, 28258, 52966, 56516, 74227, 105932, 148454, 296908, 5270117, 10540234, 21080468]

約数ペア:

[(1, 21080468), (2, 10540234), (4, 5270117), (71, 296908), (142, 148454), (199, 105932), (284, 74227), (373, 56516), (398, 52966), (746, 28258), (796, 26483), (1492, 14129)]