21456142

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{4969}}^1$

素因数の和:5115

約数の個数: 16

約数和(自身を含む): 34352640

約数和(自身を除く): 12896498

約数列:

[1, 2, 17, 34, 127, 254, 2159, 4318, 4969, 9938, 84473, 168946, 631063, 1262126, 10728071, 21456142]

約数ペア:

[(1, 21456142), (2, 10728071), (17, 1262126), (34, 631063), (127, 168946), (254, 84473), (2159, 9938), (4318, 4969)]