21520125

素因数分解:

$3^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:116

約数の個数: 96

約数和(自身を含む): 44388864

約数和(自身を除く): 22868739

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 37, 45, 47, 55, 75, 99, 111, 125, 141, 165, 185, 225, 235, 275, 333, 375, 407, 423, 495, 517, 555, 705, 825, 925, 1125, 1175, 1221, 1375, 1551, 1665, 1739, 2035, 2115, 2475, 2585, 2775, 3525, 3663, 4125, 4625, 4653, 5217, 5875, 6105, 7755, 8325, 8695, 10175, 10575, 12375, 12925, 13875, 15651, 17625, 18315, 19129, 23265, 26085, 30525, 38775, 41625, 43475, 50875, 52875, 57387, 64625, 78255, 91575, 95645, 116325, 130425, 152625, 172161, 193875, 217375, 286935, 391275, 457875, 478225, 581625, 652125, 860805, 1434675, 1956375, 2391125, 4304025, 7173375, 21520125]

約数ペア:

[(1, 21520125), (3, 7173375), (5, 4304025), (9, 2391125), (11, 1956375), (15, 1434675), (25, 860805), (33, 652125), (37, 581625), (45, 478225), (47, 457875), (55, 391275), (75, 286935), (99, 217375), (111, 193875), (125, 172161), (141, 152625), (165, 130425), (185, 116325), (225, 95645), (235, 91575), (275, 78255), (333, 64625), (375, 57387), (407, 52875), (423, 50875), (495, 43475), (517, 41625), (555, 38775), (705, 30525), (825, 26085), (925, 23265), (1125, 19129), (1175, 18315), (1221, 17625), (1375, 15651), (1551, 13875), (1665, 12925), (1739, 12375), (2035, 10575), (2115, 10175), (2475, 8695), (2585, 8325), (2775, 7755), (3525, 6105), (3663, 5875), (4125, 5217), (4625, 4653)]