19968364

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:410

約数の個数: 36

約数和(自身を含む): 38327520

約数和(自身を除く): 18359156

約数列:

[1, 2, 4, 13, 26, 52, 109, 169, 218, 271, 338, 436, 542, 676, 1084, 1417, 2834, 3523, 5668, 7046, 14092, 18421, 29539, 36842, 45799, 59078, 73684, 91598, 118156, 183196, 384007, 768014, 1536028, 4992091, 9984182, 19968364]

約数ペア:

[(1, 19968364), (2, 9984182), (4, 4992091), (13, 1536028), (26, 768014), (52, 384007), (109, 183196), (169, 118156), (218, 91598), (271, 73684), (338, 59078), (436, 45799), (542, 36842), (676, 29539), (1084, 18421), (1417, 14092), (2834, 7046), (3523, 5668)]