19956475

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1481}}^1$

素因数の和:1516

約数の個数: 36

約数和(自身を含む): 31424328

約数和(自身を除く): 11467853

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 175, 245, 275, 385, 539, 1225, 1481, 1925, 2695, 7405, 10367, 13475, 16291, 37025, 51835, 72569, 81455, 114037, 259175, 362845, 407275, 570185, 798259, 1814225, 2850925, 3991295, 19956475]

約数ペア:

[(1, 19956475), (5, 3991295), (7, 2850925), (11, 1814225), (25, 798259), (35, 570185), (49, 407275), (55, 362845), (77, 259175), (175, 114037), (245, 81455), (275, 72569), (385, 51835), (539, 37025), (1225, 16291), (1481, 13475), (1925, 10367), (2695, 7405)]