2557780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 5806080

約数和(自身を除く): 3248300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 53, 76, 95, 106, 127, 190, 212, 254, 265, 380, 508, 530, 635, 1007, 1060, 1270, 2014, 2413, 2540, 4028, 4826, 5035, 6731, 9652, 10070, 12065, 13462, 20140, 24130, 26924, 33655, 48260, 67310, 127889, 134620, 255778, 511556, 639445, 1278890, 2557780]

約数ペア:

[(1, 2557780), (2, 1278890), (4, 639445), (5, 511556), (10, 255778), (19, 134620), (20, 127889), (38, 67310), (53, 48260), (76, 33655), (95, 26924), (106, 24130), (127, 20140), (190, 13462), (212, 12065), (254, 10070), (265, 9652), (380, 6731), (508, 5035), (530, 4826), (635, 4028), (1007, 2540), (1060, 2413), (1270, 2014)]