19778128

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{33409}}^1$

素因数の和:33454

約数の個数: 20

約数和(自身を含む): 39356980

約数和(自身を除く): 19578852

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 33409, 66818, 133636, 267272, 534544, 1236133, 2472266, 4944532, 9889064, 19778128]

約数ペア:

[(1, 19778128), (2, 9889064), (4, 4944532), (8, 2472266), (16, 1236133), (37, 534544), (74, 267272), (148, 133636), (296, 66818), (592, 33409)]