20806400385

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1599877}}^1$

素因数の和:1599922

約数の個数: 36

約数和(自身を含む): 38310678588

約数和(自身を除く): 17504278203

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 289, 765, 867, 1445, 2601, 4335, 13005, 1599877, 4799631, 7999385, 14398893, 23998155, 27197909, 71994465, 81593727, 135989545, 244781181, 407968635, 462364453, 1223905905, 1387093359, 2311822265, 4161280077, 6935466795, 20806400385]

約数ペア:

[(1, 20806400385), (3, 6935466795), (5, 4161280077), (9, 2311822265), (15, 1387093359), (17, 1223905905), (45, 462364453), (51, 407968635), (85, 244781181), (153, 135989545), (255, 81593727), (289, 71994465), (765, 27197909), (867, 23998155), (1445, 14398893), (2601, 7999385), (4335, 4799631), (13005, 1599877)]