211980925

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{383}}^1$

素因数の和:550

約数の個数: 36

約数和(自身を含む): 287553024

約数和(自身を除く): 75572099

約数列:

[1, 5, 13, 25, 65, 131, 169, 325, 383, 655, 845, 1703, 1915, 3275, 4225, 4979, 8515, 9575, 22139, 24895, 42575, 50173, 64727, 110695, 124475, 250865, 323635, 553475, 652249, 1254325, 1618175, 3261245, 8479237, 16306225, 42396185, 211980925]

約数ペア:

[(1, 211980925), (5, 42396185), (13, 16306225), (25, 8479237), (65, 3261245), (131, 1618175), (169, 1254325), (325, 652249), (383, 553475), (655, 323635), (845, 250865), (1703, 124475), (1915, 110695), (3275, 64727), (4225, 50173), (4979, 42575), (8515, 24895), (9575, 22139)]