42720340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{164309}}^1$

素因数の和:164331

約数の個数: 24

約数和(自身を含む): 96614280

約数和(自身を除く): 53893940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 164309, 328618, 657236, 821545, 1643090, 2136017, 3286180, 4272034, 8544068, 10680085, 21360170, 42720340]

約数ペア:

[(1, 42720340), (2, 21360170), (4, 10680085), (5, 8544068), (10, 4272034), (13, 3286180), (20, 2136017), (26, 1643090), (52, 821545), (65, 657236), (130, 328618), (260, 164309)]