21830039

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 28046736

約数和(自身を除く): 6216697

約数列:

[1, 7, 11, 49, 77, 101, 401, 539, 707, 1111, 2807, 4411, 4949, 7777, 19649, 30877, 40501, 54439, 216139, 283507, 445511, 1984549, 3118577, 21830039]

約数ペア:

[(1, 21830039), (7, 3118577), (11, 1984549), (49, 445511), (77, 283507), (101, 216139), (401, 54439), (539, 40501), (707, 30877), (1111, 19649), (2807, 7777), (4411, 4949)]