21872030

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128659}}^1$

素因数の和:128683

約数の個数: 16

約数和(自身を含む): 41685840

約数和(自身を除く): 19813810

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128659, 257318, 643295, 1286590, 2187203, 4374406, 10936015, 21872030]

約数ペア:

[(1, 21872030), (2, 10936015), (5, 4374406), (10, 2187203), (17, 1286590), (34, 643295), (85, 257318), (170, 128659)]