28337930

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 57456000

約数和(自身を除く): 29118070

約数列:

[1, 2, 5, 10, 19, 29, 37, 38, 58, 74, 95, 139, 145, 185, 190, 278, 290, 370, 551, 695, 703, 1073, 1102, 1390, 1406, 2146, 2641, 2755, 3515, 4031, 5143, 5282, 5365, 5510, 7030, 8062, 10286, 10730, 13205, 20155, 20387, 25715, 26410, 40310, 40774, 51430, 76589, 97717, 101935, 149147, 153178, 195434, 203870, 298294, 382945, 488585, 745735, 765890, 977170, 1491470, 2833793, 5667586, 14168965, 28337930]

約数ペア:

[(1, 28337930), (2, 14168965), (5, 5667586), (10, 2833793), (19, 1491470), (29, 977170), (37, 765890), (38, 745735), (58, 488585), (74, 382945), (95, 298294), (139, 203870), (145, 195434), (185, 153178), (190, 149147), (278, 101935), (290, 97717), (370, 76589), (551, 51430), (695, 40774), (703, 40310), (1073, 26410), (1102, 25715), (1390, 20387), (1406, 20155), (2146, 13205), (2641, 10730), (2755, 10286), (3515, 8062), (4031, 7030), (5143, 5510), (5282, 5365)]