398391910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{991}}^1\times {\mathrm{5743}}^1$

素因数の和:6748

約数の個数: 32

約数和(自身を含む): 820518912

約数和(自身を除く): 422127002

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 991, 1982, 4955, 5743, 6937, 9910, 11486, 13874, 28715, 34685, 40201, 57430, 69370, 80402, 201005, 402010, 5691313, 11382626, 28456565, 39839191, 56913130, 79678382, 199195955, 398391910]

約数ペア:

[(1, 398391910), (2, 199195955), (5, 79678382), (7, 56913130), (10, 39839191), (14, 28456565), (35, 11382626), (70, 5691313), (991, 402010), (1982, 201005), (4955, 80402), (5743, 69370), (6937, 57430), (9910, 40201), (11486, 34685), (13874, 28715)]