201920125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 296524800

約数和(自身を除く): 94604675

約数列:

[1, 5, 11, 19, 25, 55, 59, 95, 125, 131, 209, 275, 295, 475, 649, 655, 1045, 1121, 1375, 1441, 1475, 2375, 2489, 3245, 3275, 5225, 5605, 7205, 7375, 7729, 12331, 12445, 16225, 16375, 26125, 27379, 28025, 36025, 38645, 61655, 62225, 81125, 85019, 136895, 140125, 146851, 180125, 193225, 308275, 311125, 425095, 684475, 734255, 966125, 1541375, 1615361, 2125475, 3422375, 3671275, 8076805, 10627375, 18356375, 40384025, 201920125]

約数ペア:

[(1, 201920125), (5, 40384025), (11, 18356375), (19, 10627375), (25, 8076805), (55, 3671275), (59, 3422375), (95, 2125475), (125, 1615361), (131, 1541375), (209, 966125), (275, 734255), (295, 684475), (475, 425095), (649, 311125), (655, 308275), (1045, 193225), (1121, 180125), (1375, 146851), (1441, 140125), (1475, 136895), (2375, 85019), (2489, 81125), (3245, 62225), (3275, 61655), (5225, 38645), (5605, 36025), (7205, 28025), (7375, 27379), (7729, 26125), (12331, 16375), (12445, 16225)]