21200030

素因数分解:

$2^1\times 5^1\times {\mathrm{659}}^1\times {\mathrm{3217}}^1$

素因数の和:3883

約数の個数: 16

約数和(自身を含む): 38229840

約数和(自身を除く): 17029810

約数列:

[1, 2, 5, 10, 659, 1318, 3217, 3295, 6434, 6590, 16085, 32170, 2120003, 4240006, 10600015, 21200030]

約数ペア:

[(1, 21200030), (2, 10600015), (5, 4240006), (10, 2120003), (659, 32170), (1318, 16085), (3217, 6590), (3295, 6434)]