21683365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 30212352

約数和(自身を除く): 8528987

約数列:

[1, 5, 11, 23, 55, 61, 115, 253, 281, 305, 671, 1265, 1403, 1405, 3091, 3355, 6463, 7015, 15433, 15455, 17141, 32315, 71093, 77165, 85705, 188551, 355465, 394243, 942755, 1971215, 4336673, 21683365]

約数ペア:

[(1, 21683365), (5, 4336673), (11, 1971215), (23, 942755), (55, 394243), (61, 355465), (115, 188551), (253, 85705), (281, 77165), (305, 71093), (671, 32315), (1265, 17141), (1403, 15455), (1405, 15433), (3091, 7015), (3355, 6463)]