19883325

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{313}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 41427904

約数和(自身を除く): 21544579

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 75, 77, 105, 121, 165, 175, 231, 275, 313, 363, 385, 525, 605, 825, 847, 939, 1155, 1565, 1815, 1925, 2191, 2541, 3025, 3443, 4235, 4695, 5775, 6573, 7825, 9075, 10329, 10955, 12705, 17215, 21175, 23475, 24101, 32865, 37873, 51645, 54775, 63525, 72303, 86075, 113619, 120505, 164325, 189365, 258225, 265111, 361515, 568095, 602525, 795333, 946825, 1325555, 1807575, 2840475, 3976665, 6627775, 19883325]

約数ペア:

[(1, 19883325), (3, 6627775), (5, 3976665), (7, 2840475), (11, 1807575), (15, 1325555), (21, 946825), (25, 795333), (33, 602525), (35, 568095), (55, 361515), (75, 265111), (77, 258225), (105, 189365), (121, 164325), (165, 120505), (175, 113619), (231, 86075), (275, 72303), (313, 63525), (363, 54775), (385, 51645), (525, 37873), (605, 32865), (825, 24101), (847, 23475), (939, 21175), (1155, 17215), (1565, 12705), (1815, 10955), (1925, 10329), (2191, 9075), (2541, 7825), (3025, 6573), (3443, 5775), (4235, 4695)]