18929421

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{2659}}^1$

素因数の和:2785

約数の個数: 24

約数和(自身を含む): 31536960

約数和(自身を除く): 12607539

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 2373, 2659, 7119, 7977, 18613, 23931, 55839, 167517, 300467, 901401, 2103269, 2704203, 6309807, 18929421]

約数ペア:

[(1, 18929421), (3, 6309807), (7, 2704203), (9, 2103269), (21, 901401), (63, 300467), (113, 167517), (339, 55839), (791, 23931), (1017, 18613), (2373, 7977), (2659, 7119)]