18161605

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{293}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 28957824

約数和(自身を除く): 10796219

約数列:

[1, 5, 7, 11, 23, 35, 49, 55, 77, 115, 161, 245, 253, 293, 385, 539, 805, 1127, 1265, 1465, 1771, 2051, 2695, 3223, 5635, 6739, 8855, 10255, 12397, 14357, 16115, 22561, 33695, 47173, 61985, 71785, 74129, 112805, 157927, 235865, 330211, 370645, 518903, 789635, 1651055, 2594515, 3632321, 18161605]

約数ペア:

[(1, 18161605), (5, 3632321), (7, 2594515), (11, 1651055), (23, 789635), (35, 518903), (49, 370645), (55, 330211), (77, 235865), (115, 157927), (161, 112805), (245, 74129), (253, 71785), (293, 61985), (385, 47173), (539, 33695), (805, 22561), (1127, 16115), (1265, 14357), (1465, 12397), (1771, 10255), (2051, 8855), (2695, 6739), (3223, 5635)]