664663700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{353}}^1\times {\mathrm{991}}^1$

素因数の和:1377

約数の個数: 72

約数和(自身を含む): 1524069120

約数和(自身を除く): 859405420

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 353, 380, 475, 706, 950, 991, 1412, 1765, 1900, 1982, 3530, 3964, 4955, 6707, 7060, 8825, 9910, 13414, 17650, 18829, 19820, 24775, 26828, 33535, 35300, 37658, 49550, 67070, 75316, 94145, 99100, 134140, 167675, 188290, 335350, 349823, 376580, 470725, 670700, 699646, 941450, 1399292, 1749115, 1882900, 3498230, 6646637, 6996460, 8745575, 13293274, 17491150, 26586548, 33233185, 34982300, 66466370, 132932740, 166165925, 332331850, 664663700]

約数ペア:

[(1, 664663700), (2, 332331850), (4, 166165925), (5, 132932740), (10, 66466370), (19, 34982300), (20, 33233185), (25, 26586548), (38, 17491150), (50, 13293274), (76, 8745575), (95, 6996460), (100, 6646637), (190, 3498230), (353, 1882900), (380, 1749115), (475, 1399292), (706, 941450), (950, 699646), (991, 670700), (1412, 470725), (1765, 376580), (1900, 349823), (1982, 335350), (3530, 188290), (3964, 167675), (4955, 134140), (6707, 99100), (7060, 94145), (8825, 75316), (9910, 67070), (13414, 49550), (17650, 37658), (18829, 35300), (19820, 33535), (24775, 26828)]