21516378

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{1237}}^1$

素因数の和:1478

約数の個数: 32

約数和(自身を含む): 46588416

約数和(自身を除く): 25072038

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 223, 446, 669, 1237, 1338, 2474, 2899, 3711, 5798, 7422, 8697, 16081, 17394, 32162, 48243, 96486, 275851, 551702, 827553, 1655106, 3586063, 7172126, 10758189, 21516378]

約数ペア:

[(1, 21516378), (2, 10758189), (3, 7172126), (6, 3586063), (13, 1655106), (26, 827553), (39, 551702), (78, 275851), (223, 96486), (446, 48243), (669, 32162), (1237, 17394), (1338, 16081), (2474, 8697), (2899, 7422), (3711, 5798)]