20998610

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 42681600

約数和(自身を除く): 21682990

約数列:

[1, 2, 5, 10, 19, 29, 37, 38, 58, 74, 95, 103, 145, 185, 190, 206, 290, 370, 515, 551, 703, 1030, 1073, 1102, 1406, 1957, 2146, 2755, 2987, 3515, 3811, 3914, 5365, 5510, 5974, 7030, 7622, 9785, 10730, 14935, 19055, 19570, 20387, 29870, 38110, 40774, 56753, 72409, 101935, 110519, 113506, 144818, 203870, 221038, 283765, 362045, 552595, 567530, 724090, 1105190, 2099861, 4199722, 10499305, 20998610]

約数ペア:

[(1, 20998610), (2, 10499305), (5, 4199722), (10, 2099861), (19, 1105190), (29, 724090), (37, 567530), (38, 552595), (58, 362045), (74, 283765), (95, 221038), (103, 203870), (145, 144818), (185, 113506), (190, 110519), (206, 101935), (290, 72409), (370, 56753), (515, 40774), (551, 38110), (703, 29870), (1030, 20387), (1073, 19570), (1102, 19055), (1406, 14935), (1957, 10730), (2146, 9785), (2755, 7622), (2987, 7030), (3515, 5974), (3811, 5510), (3914, 5365)]