19904768

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{5981}}^1$

素因数の和:6010

約数の個数: 36

約数和(自身を含む): 42795228

約数和(自身を除く): 22890460

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 832, 1664, 3328, 5981, 11962, 23924, 47848, 77753, 95696, 155506, 191392, 311012, 382784, 622024, 765568, 1244048, 1531136, 2488096, 4976192, 9952384, 19904768]

約数ペア:

[(1, 19904768), (2, 9952384), (4, 4976192), (8, 2488096), (13, 1531136), (16, 1244048), (26, 765568), (32, 622024), (52, 382784), (64, 311012), (104, 191392), (128, 155506), (208, 95696), (256, 77753), (416, 47848), (832, 23924), (1664, 11962), (3328, 5981)]