20345675

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 31545600

約数和(自身を除く): 11199925

約数列:

[1, 5, 7, 19, 25, 29, 35, 95, 133, 145, 175, 203, 211, 475, 551, 665, 725, 1015, 1055, 1477, 2755, 3325, 3857, 4009, 5075, 5275, 6119, 7385, 13775, 19285, 20045, 28063, 30595, 36925, 42833, 96425, 100225, 116261, 140315, 152975, 214165, 581305, 701575, 813827, 1070825, 2906525, 4069135, 20345675]

約数ペア:

[(1, 20345675), (5, 4069135), (7, 2906525), (19, 1070825), (25, 813827), (29, 701575), (35, 581305), (95, 214165), (133, 152975), (145, 140315), (175, 116261), (203, 100225), (211, 96425), (475, 42833), (551, 36925), (665, 30595), (725, 28063), (1015, 20045), (1055, 19285), (1477, 13775), (2755, 7385), (3325, 6119), (3857, 5275), (4009, 5075)]