20213069875

素因数分解:

$5^3\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{99023}}^1$

素因数の和:99132

約数の個数: 32

約数和(自身を含む): 26693701632

約数和(自身を除く): 6480631757

約数列:

[1, 5, 23, 25, 71, 115, 125, 355, 575, 1633, 1775, 2875, 8165, 8875, 40825, 99023, 204125, 495115, 2277529, 2475575, 7030633, 11387645, 12377875, 35153165, 56938225, 161704559, 175765825, 284691125, 808522795, 878829125, 4042613975, 20213069875]

約数ペア:

[(1, 20213069875), (5, 4042613975), (23, 878829125), (25, 808522795), (71, 284691125), (115, 175765825), (125, 161704559), (355, 56938225), (575, 35153165), (1633, 12377875), (1775, 11387645), (2875, 7030633), (8165, 2475575), (8875, 2277529), (40825, 495115), (99023, 204125)]