21139405

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{353}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 30585600

約数和(自身を除く): 9446195

約数列:

[1, 5, 7, 29, 35, 59, 145, 203, 295, 353, 413, 1015, 1711, 1765, 2065, 2471, 8555, 10237, 11977, 12355, 20827, 51185, 59885, 71659, 104135, 145789, 358295, 603983, 728945, 3019915, 4227881, 21139405]

約数ペア:

[(1, 21139405), (5, 4227881), (7, 3019915), (29, 728945), (35, 603983), (59, 358295), (145, 145789), (203, 104135), (295, 71659), (353, 59885), (413, 51185), (1015, 20827), (1711, 12355), (1765, 11977), (2065, 10237), (2471, 8555)]