20849480

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30661}}^1$

素因数の和:30689

約数の個数: 32

約数和(自身を含む): 49672440

約数和(自身を除く): 28822960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30661, 61322, 122644, 153305, 245288, 306610, 521237, 613220, 1042474, 1226440, 2084948, 2606185, 4169896, 5212370, 10424740, 20849480]

約数ペア:

[(1, 20849480), (2, 10424740), (4, 5212370), (5, 4169896), (8, 2606185), (10, 2084948), (17, 1226440), (20, 1042474), (34, 613220), (40, 521237), (68, 306610), (85, 245288), (136, 153305), (170, 122644), (340, 61322), (680, 30661)]