21404418

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{6451}}^1$

素因数の和:6542

約数の個数: 32

約数和(自身を含む): 49551360

約数和(自身を除く): 28146942

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 79, 158, 237, 474, 553, 1106, 1659, 3318, 6451, 12902, 19353, 38706, 45157, 90314, 135471, 270942, 509629, 1019258, 1528887, 3057774, 3567403, 7134806, 10702209, 21404418]

約数ペア:

[(1, 21404418), (2, 10702209), (3, 7134806), (6, 3567403), (7, 3057774), (14, 1528887), (21, 1019258), (42, 509629), (79, 270942), (158, 135471), (237, 90314), (474, 45157), (553, 38706), (1106, 19353), (1659, 12902), (3318, 6451)]