215520855

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{18397}}^1$

素因数の和:18487

約数の個数: 32

約数和(自身を含む): 381500928

約数和(自身を除く): 165980073

約数列:

[1, 3, 5, 11, 15, 33, 55, 71, 165, 213, 355, 781, 1065, 2343, 3905, 11715, 18397, 55191, 91985, 202367, 275955, 607101, 1011835, 1306187, 3035505, 3918561, 6530935, 14368057, 19592805, 43104171, 71840285, 215520855]

約数ペア:

[(1, 215520855), (3, 71840285), (5, 43104171), (11, 19592805), (15, 14368057), (33, 6530935), (55, 3918561), (71, 3035505), (165, 1306187), (213, 1011835), (355, 607101), (781, 275955), (1065, 202367), (2343, 91985), (3905, 55191), (11715, 18397)]