81718195

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1163}}^1$

素因数の和:1251

約数の個数: 32

約数和(自身を含む): 112637952

約数和(自身を除く): 30919757

約数列:

[1, 5, 13, 23, 47, 65, 115, 235, 299, 611, 1081, 1163, 1495, 3055, 5405, 5815, 14053, 15119, 26749, 54661, 70265, 75595, 133745, 273305, 347737, 710593, 1257203, 1738685, 3552965, 6286015, 16343639, 81718195]

約数ペア:

[(1, 81718195), (5, 16343639), (13, 6286015), (23, 3552965), (47, 1738685), (65, 1257203), (115, 710593), (235, 347737), (299, 273305), (611, 133745), (1081, 75595), (1163, 70265), (1495, 54661), (3055, 26749), (5405, 15119), (5815, 14053)]