20561145

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4297}}^1$

素因数の和:4345

約数の個数: 32

約数和(自身を含む): 37134720

約数和(自身を除く): 16573575

約数列:

[1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595, 4297, 4785, 12891, 21485, 47267, 64455, 124613, 141801, 236335, 373839, 623065, 709005, 1370743, 1869195, 4112229, 6853715, 20561145]

約数ペア:

[(1, 20561145), (3, 6853715), (5, 4112229), (11, 1869195), (15, 1370743), (29, 709005), (33, 623065), (55, 373839), (87, 236335), (145, 141801), (165, 124613), (319, 64455), (435, 47267), (957, 21485), (1595, 12891), (4297, 4785)]