21716331

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 37244160

約数和(自身を除く): 15527829

約数列:

[1, 3, 7, 13, 21, 29, 39, 87, 91, 169, 203, 211, 273, 377, 507, 609, 633, 1131, 1183, 1477, 2639, 2743, 3549, 4431, 4901, 6119, 7917, 8229, 14703, 18357, 19201, 34307, 35659, 42833, 57603, 79547, 102921, 106977, 128499, 238641, 249613, 556829, 748839, 1034111, 1670487, 3102333, 7238777, 21716331]

約数ペア:

[(1, 21716331), (3, 7238777), (7, 3102333), (13, 1670487), (21, 1034111), (29, 748839), (39, 556829), (87, 249613), (91, 238641), (169, 128499), (203, 106977), (211, 102921), (273, 79547), (377, 57603), (507, 42833), (609, 35659), (633, 34307), (1131, 19201), (1183, 18357), (1477, 14703), (2639, 8229), (2743, 7917), (3549, 6119), (4431, 4901)]