19538109

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{2551}}^1$

素因数の和:2617

約数の個数: 24

約数和(自身を含む): 30256512

約数和(自身を除く): 10718403

約数列:

[1, 3, 9, 23, 37, 69, 111, 207, 333, 851, 2551, 2553, 7653, 7659, 22959, 58673, 94387, 176019, 283161, 528057, 849483, 2170901, 6512703, 19538109]

約数ペア:

[(1, 19538109), (3, 6512703), (9, 2170901), (23, 849483), (37, 528057), (69, 283161), (111, 176019), (207, 94387), (333, 58673), (851, 22959), (2551, 7659), (2553, 7653)]