19658368

素因数分解:

$2^7\times {\mathrm{109}}^1\times {\mathrm{1409}}^1$

素因数の和:1532

約数の個数: 32

約数和(自身を含む): 39550500

約数和(自身を除く): 19892132

約数列:

[1, 2, 4, 8, 16, 32, 64, 109, 128, 218, 436, 872, 1409, 1744, 2818, 3488, 5636, 6976, 11272, 13952, 22544, 45088, 90176, 153581, 180352, 307162, 614324, 1228648, 2457296, 4914592, 9829184, 19658368]

約数ペア:

[(1, 19658368), (2, 9829184), (4, 4914592), (8, 2457296), (16, 1228648), (32, 614324), (64, 307162), (109, 180352), (128, 153581), (218, 90176), (436, 45088), (872, 22544), (1409, 13952), (1744, 11272), (2818, 6976), (3488, 5636)]