21682168

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{271}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 41664960

約数和(自身を除く): 19982792

約数列:

[1, 2, 4, 8, 73, 137, 146, 271, 274, 292, 542, 548, 584, 1084, 1096, 2168, 10001, 19783, 20002, 37127, 39566, 40004, 74254, 79132, 80008, 148508, 158264, 297016, 2710271, 5420542, 10841084, 21682168]

約数ペア:

[(1, 21682168), (2, 10841084), (4, 5420542), (8, 2710271), (73, 297016), (137, 158264), (146, 148508), (271, 80008), (274, 79132), (292, 74254), (542, 40004), (548, 39566), (584, 37127), (1084, 20002), (1096, 19783), (2168, 10001)]