20401535

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2789}}^1$

素因数の和:2831

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 11739265

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 385, 665, 1045, 1463, 2789, 7315, 13945, 19523, 30679, 52991, 97615, 153395, 214753, 264955, 370937, 582901, 1073765, 1854685, 2914505, 4080307, 20401535]

約数ペア:

[(1, 20401535), (5, 4080307), (7, 2914505), (11, 1854685), (19, 1073765), (35, 582901), (55, 370937), (77, 264955), (95, 214753), (133, 153395), (209, 97615), (385, 52991), (665, 30679), (1045, 19523), (1463, 13945), (2789, 7315)]