20913004

素因数分解:

$2^2\times 7^2\times {\mathrm{106699}}^1$

素因数の和:106717

約数の個数: 18

約数和(自身を含む): 42573300

約数和(自身を除く): 21660296

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 106699, 213398, 426796, 746893, 1493786, 2987572, 5228251, 10456502, 20913004]

約数ペア:

[(1, 20913004), (2, 10456502), (4, 5228251), (7, 2987572), (14, 1493786), (28, 746893), (49, 426796), (98, 213398), (196, 106699)]