20758925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 30801600

約数和(自身を除く): 10042675

約数列:

[1, 5, 11, 19, 25, 29, 55, 95, 137, 145, 209, 275, 319, 475, 551, 685, 725, 1045, 1507, 1595, 2603, 2755, 3425, 3973, 5225, 6061, 7535, 7975, 13015, 13775, 19865, 28633, 30305, 37675, 43703, 65075, 75487, 99325, 143165, 151525, 218515, 377435, 715825, 830357, 1092575, 1887175, 4151785, 20758925]

約数ペア:

[(1, 20758925), (5, 4151785), (11, 1887175), (19, 1092575), (25, 830357), (29, 715825), (55, 377435), (95, 218515), (137, 151525), (145, 143165), (209, 99325), (275, 75487), (319, 65075), (475, 43703), (551, 37675), (685, 30305), (725, 28633), (1045, 19865), (1507, 13775), (1595, 13015), (2603, 7975), (2755, 7535), (3425, 6061), (3973, 5225)]