9800990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{991}}^1$

素因数の和:1064

約数の個数: 32

約数和(自身を含む): 18855936

約数和(自身を除く): 9054946

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 991, 1978, 1982, 4945, 4955, 9890, 9910, 22793, 42613, 45586, 85226, 113965, 213065, 227930, 426130, 980099, 1960198, 4900495, 9800990]

約数ペア:

[(1, 9800990), (2, 4900495), (5, 1960198), (10, 980099), (23, 426130), (43, 227930), (46, 213065), (86, 113965), (115, 85226), (215, 45586), (230, 42613), (430, 22793), (989, 9910), (991, 9890), (1978, 4955), (1982, 4945)]