25697840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:550

約数の個数: 80

約数和(自身を含む): 69072960

約数和(自身を除く): 43375120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 280, 421, 436, 545, 560, 763, 842, 872, 1090, 1526, 1684, 1744, 2105, 2180, 2947, 3052, 3368, 3815, 4210, 4360, 5894, 6104, 6736, 7630, 8420, 8720, 11788, 12208, 14735, 15260, 16840, 23576, 29470, 30520, 33680, 45889, 47152, 58940, 61040, 91778, 117880, 183556, 229445, 235760, 321223, 367112, 458890, 642446, 734224, 917780, 1284892, 1606115, 1835560, 2569784, 3212230, 3671120, 5139568, 6424460, 12848920, 25697840]

約数ペア:

[(1, 25697840), (2, 12848920), (4, 6424460), (5, 5139568), (7, 3671120), (8, 3212230), (10, 2569784), (14, 1835560), (16, 1606115), (20, 1284892), (28, 917780), (35, 734224), (40, 642446), (56, 458890), (70, 367112), (80, 321223), (109, 235760), (112, 229445), (140, 183556), (218, 117880), (280, 91778), (421, 61040), (436, 58940), (545, 47152), (560, 45889), (763, 33680), (842, 30520), (872, 29470), (1090, 23576), (1526, 16840), (1684, 15260), (1744, 14735), (2105, 12208), (2180, 11788), (2947, 8720), (3052, 8420), (3368, 7630), (3815, 6736), (4210, 6104), (4360, 5894)]