29720405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{211}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 42311808

約数和(自身を除く): 12591403

約数列:

[1, 5, 11, 13, 55, 65, 143, 197, 211, 715, 985, 1055, 2167, 2321, 2561, 2743, 10835, 11605, 12805, 13715, 28171, 30173, 41567, 140855, 150865, 207835, 457237, 540371, 2286185, 2701855, 5944081, 29720405]

約数ペア:

[(1, 29720405), (5, 5944081), (11, 2701855), (13, 2286185), (55, 540371), (65, 457237), (143, 207835), (197, 150865), (211, 140855), (715, 41567), (985, 30173), (1055, 28171), (2167, 13715), (2321, 12805), (2561, 11605), (2743, 10835)]