21020398

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{88321}}^1$

素因数の和:88347

約数の個数: 16

約数和(自身を含む): 38155104

約数和(自身を除く): 17134706

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 88321, 176642, 618247, 1236494, 1501457, 3002914, 10510199, 21020398]

約数ペア:

[(1, 21020398), (2, 10510199), (7, 3002914), (14, 1501457), (17, 1236494), (34, 618247), (119, 176642), (238, 88321)]