55991120

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{6421}}^1$

素因数の和:6543

約数の個数: 40

約数和(自身を含む): 131394120

約数和(自身を除く): 75403000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 6421, 8720, 12842, 25684, 32105, 51368, 64210, 102736, 128420, 256840, 513680, 699889, 1399778, 2799556, 3499445, 5599112, 6998890, 11198224, 13997780, 27995560, 55991120]

約数ペア:

[(1, 55991120), (2, 27995560), (4, 13997780), (5, 11198224), (8, 6998890), (10, 5599112), (16, 3499445), (20, 2799556), (40, 1399778), (80, 699889), (109, 513680), (218, 256840), (436, 128420), (545, 102736), (872, 64210), (1090, 51368), (1744, 32105), (2180, 25684), (4360, 12842), (6421, 8720)]