18928780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1549}}^1$

素因数の和:1618

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 24818420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1549, 2444, 3055, 3098, 6110, 6196, 7745, 12220, 15490, 20137, 30980, 40274, 72803, 80548, 100685, 145606, 201370, 291212, 364015, 402740, 728030, 946439, 1456060, 1892878, 3785756, 4732195, 9464390, 18928780]

約数ペア:

[(1, 18928780), (2, 9464390), (4, 4732195), (5, 3785756), (10, 1892878), (13, 1456060), (20, 946439), (26, 728030), (47, 402740), (52, 364015), (65, 291212), (94, 201370), (130, 145606), (188, 100685), (235, 80548), (260, 72803), (470, 40274), (611, 30980), (940, 20137), (1222, 15490), (1549, 12220), (2444, 7745), (3055, 6196), (3098, 6110)]