421388

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:233

約数の個数: 24

約数和(自身を含む): 822864

約数和(自身を除く): 401476

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 157, 244, 314, 628, 671, 1342, 1727, 2684, 3454, 6908, 9577, 19154, 38308, 105347, 210694, 421388]

約数ペア:

[(1, 421388), (2, 210694), (4, 105347), (11, 38308), (22, 19154), (44, 9577), (61, 6908), (122, 3454), (157, 2684), (244, 1727), (314, 1342), (628, 671)]