20962955

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 29248128

約数和(自身を除く): 8285173

約数列:

[1, 5, 13, 17, 61, 65, 85, 221, 305, 311, 793, 1037, 1105, 1555, 3965, 4043, 5185, 5287, 13481, 18971, 20215, 26435, 67405, 68731, 94855, 246623, 322507, 343655, 1233115, 1612535, 4192591, 20962955]

約数ペア:

[(1, 20962955), (5, 4192591), (13, 1612535), (17, 1233115), (61, 343655), (65, 322507), (85, 246623), (221, 94855), (305, 68731), (311, 67405), (793, 26435), (1037, 20215), (1105, 18971), (1555, 13481), (3965, 5287), (4043, 5185)]