18091520

素因数分解:

$2^9\times 5^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:251

約数の個数: 80

約数和(自身を含む): 44782848

約数和(自身を除く): 26691328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 191, 256, 296, 320, 370, 382, 512, 592, 640, 740, 764, 955, 1184, 1280, 1480, 1528, 1910, 2368, 2560, 2960, 3056, 3820, 4736, 5920, 6112, 7067, 7640, 9472, 11840, 12224, 14134, 15280, 18944, 23680, 24448, 28268, 30560, 35335, 47360, 48896, 56536, 61120, 70670, 94720, 97792, 113072, 122240, 141340, 226144, 244480, 282680, 452288, 488960, 565360, 904576, 1130720, 1809152, 2261440, 3618304, 4522880, 9045760, 18091520]

約数ペア:

[(1, 18091520), (2, 9045760), (4, 4522880), (5, 3618304), (8, 2261440), (10, 1809152), (16, 1130720), (20, 904576), (32, 565360), (37, 488960), (40, 452288), (64, 282680), (74, 244480), (80, 226144), (128, 141340), (148, 122240), (160, 113072), (185, 97792), (191, 94720), (256, 70670), (296, 61120), (320, 56536), (370, 48896), (382, 47360), (512, 35335), (592, 30560), (640, 28268), (740, 24448), (764, 23680), (955, 18944), (1184, 15280), (1280, 14134), (1480, 12224), (1528, 11840), (1910, 9472), (2368, 7640), (2560, 7067), (2960, 6112), (3056, 5920), (3820, 4736)]