20623835

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 27648000

約数和(自身を除く): 7024165

約数列:

[1, 5, 19, 31, 47, 95, 149, 155, 235, 589, 745, 893, 1457, 2831, 2945, 4465, 4619, 7003, 7285, 14155, 23095, 27683, 35015, 87761, 133057, 138415, 217093, 438805, 665285, 1085465, 4124767, 20623835]

約数ペア:

[(1, 20623835), (5, 4124767), (19, 1085465), (31, 665285), (47, 438805), (95, 217093), (149, 138415), (155, 133057), (235, 87761), (589, 35015), (745, 27683), (893, 23095), (1457, 14155), (2831, 7285), (2945, 7003), (4465, 4619)]