28898780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 62596800

約数和(自身を除く): 33698020

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 137, 199, 212, 265, 274, 398, 530, 548, 685, 796, 995, 1060, 1370, 1990, 2740, 3980, 7261, 10547, 14522, 21094, 27263, 29044, 36305, 42188, 52735, 54526, 72610, 105470, 109052, 136315, 145220, 210940, 272630, 545260, 1444939, 2889878, 5779756, 7224695, 14449390, 28898780]

約数ペア:

[(1, 28898780), (2, 14449390), (4, 7224695), (5, 5779756), (10, 2889878), (20, 1444939), (53, 545260), (106, 272630), (137, 210940), (199, 145220), (212, 136315), (265, 109052), (274, 105470), (398, 72610), (530, 54526), (548, 52735), (685, 42188), (796, 36305), (995, 29044), (1060, 27263), (1370, 21094), (1990, 14522), (2740, 10547), (3980, 7261)]