661552

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:420

約数の個数: 20

約数和(自身を含む): 1294560

約数和(自身を除く): 633008

約数列:

[1, 2, 4, 8, 16, 173, 239, 346, 478, 692, 956, 1384, 1912, 2768, 3824, 41347, 82694, 165388, 330776, 661552]

約数ペア:

[(1, 661552), (2, 330776), (4, 165388), (8, 82694), (16, 41347), (173, 3824), (239, 2768), (346, 1912), (478, 1384), (692, 956)]