21401264

素因数分解:

$2^4\times {\mathrm{73}}^2\times {\mathrm{251}}^1$

素因数の和:405

約数の個数: 30

約数和(自身を含む): 42208236

約数和(自身を除く): 20806972

約数列:

[1, 2, 4, 8, 16, 73, 146, 251, 292, 502, 584, 1004, 1168, 2008, 4016, 5329, 10658, 18323, 21316, 36646, 42632, 73292, 85264, 146584, 293168, 1337579, 2675158, 5350316, 10700632, 21401264]

約数ペア:

[(1, 21401264), (2, 10700632), (4, 5350316), (8, 2675158), (16, 1337579), (73, 293168), (146, 146584), (251, 85264), (292, 73292), (502, 42632), (584, 36646), (1004, 21316), (1168, 18323), (2008, 10658), (4016, 5329)]