78931220

素因数分解:

$2^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{9419}}^1$

素因数の和:9847

約数の個数: 24

約数和(自身を含む): 166168800

約数和(自身を除く): 87237580

約数列:

[1, 2, 4, 5, 10, 20, 419, 838, 1676, 2095, 4190, 8380, 9419, 18838, 37676, 47095, 94190, 188380, 3946561, 7893122, 15786244, 19732805, 39465610, 78931220]

約数ペア:

[(1, 78931220), (2, 39465610), (4, 19732805), (5, 15786244), (10, 7893122), (20, 3946561), (419, 188380), (838, 94190), (1676, 47095), (2095, 37676), (4190, 18838), (8380, 9419)]