81052820

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 173916288

約数和(自身を除く): 92863468

約数列:

[1, 2, 4, 5, 10, 20, 83, 157, 166, 311, 314, 332, 415, 622, 628, 785, 830, 1244, 1555, 1570, 1660, 3110, 3140, 6220, 13031, 25813, 26062, 48827, 51626, 52124, 65155, 97654, 103252, 129065, 130310, 195308, 244135, 258130, 260620, 488270, 516260, 976540, 4052641, 8105282, 16210564, 20263205, 40526410, 81052820]

約数ペア:

[(1, 81052820), (2, 40526410), (4, 20263205), (5, 16210564), (10, 8105282), (20, 4052641), (83, 976540), (157, 516260), (166, 488270), (311, 260620), (314, 258130), (332, 244135), (415, 195308), (622, 130310), (628, 129065), (785, 103252), (830, 97654), (1244, 65155), (1555, 52124), (1570, 51626), (1660, 48827), (3110, 26062), (3140, 25813), (6220, 13031)]