721996

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 1406160

約数和(自身を除く): 684164

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 269, 538, 671, 1076, 1342, 2684, 2959, 5918, 11836, 16409, 32818, 65636, 180499, 360998, 721996]

約数ペア:

[(1, 721996), (2, 360998), (4, 180499), (11, 65636), (22, 32818), (44, 16409), (61, 11836), (122, 5918), (244, 2959), (269, 2684), (538, 1342), (671, 1076)]