19561456

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:409

約数の個数: 40

約数和(自身を含む): 39354624

約数和(自身を除く): 19793168

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 173, 191, 296, 346, 382, 592, 692, 764, 1384, 1528, 2768, 3056, 6401, 7067, 12802, 14134, 25604, 28268, 33043, 51208, 56536, 66086, 102416, 113072, 132172, 264344, 528688, 1222591, 2445182, 4890364, 9780728, 19561456]

約数ペア:

[(1, 19561456), (2, 9780728), (4, 4890364), (8, 2445182), (16, 1222591), (37, 528688), (74, 264344), (148, 132172), (173, 113072), (191, 102416), (296, 66086), (346, 56536), (382, 51208), (592, 33043), (692, 28268), (764, 25604), (1384, 14134), (1528, 12802), (2768, 7067), (3056, 6401)]