20650019

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:167

約数の個数: 32

約数和(自身を含む): 25147584

約数和(自身を除く): 4497565

約数列:

[1, 13, 17, 41, 43, 53, 221, 533, 559, 689, 697, 731, 901, 1763, 2173, 2279, 9061, 9503, 11713, 22919, 28249, 29627, 29971, 36941, 38743, 93439, 389623, 480233, 503659, 1214707, 1588463, 20650019]

約数ペア:

[(1, 20650019), (13, 1588463), (17, 1214707), (41, 503659), (43, 480233), (53, 389623), (221, 93439), (533, 38743), (559, 36941), (689, 29971), (697, 29627), (731, 28249), (901, 22919), (1763, 11713), (2173, 9503), (2279, 9061)]