19968620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7507}}^1$

素因数の和:7542

約数の個数: 48

約数和(自身を含む): 50453760

約数和(自身を除く): 30485140

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7507, 15014, 30028, 37535, 52549, 75070, 105098, 142633, 150140, 210196, 262745, 285266, 525490, 570532, 713165, 998431, 1050980, 1426330, 1996862, 2852660, 3993724, 4992155, 9984310, 19968620]

約数ペア:

[(1, 19968620), (2, 9984310), (4, 4992155), (5, 3993724), (7, 2852660), (10, 1996862), (14, 1426330), (19, 1050980), (20, 998431), (28, 713165), (35, 570532), (38, 525490), (70, 285266), (76, 262745), (95, 210196), (133, 150140), (140, 142633), (190, 105098), (266, 75070), (380, 52549), (532, 37535), (665, 30028), (1330, 15014), (2660, 7507)]