20180859975

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1\times {\mathrm{353}}^1$

素因数の和:742

約数の個数: 144

約数和(自身を含む): 39169278720

約数和(自身を除く): 18988418745

約数列:

[1, 3, 5, 9, 15, 19, 25, 43, 45, 57, 75, 95, 129, 171, 215, 225, 285, 311, 353, 387, 475, 645, 817, 855, 933, 1059, 1075, 1425, 1555, 1765, 1935, 2451, 2799, 3177, 3225, 4085, 4275, 4665, 5295, 5909, 6707, 7353, 7775, 8825, 9675, 12255, 13373, 13995, 15179, 15885, 17727, 20121, 20425, 23325, 26475, 29545, 33535, 36765, 40119, 45537, 53181, 60363, 61275, 66865, 69975, 75895, 79425, 88635, 100605, 109783, 120357, 136611, 147725, 167675, 183825, 200595, 227685, 254087, 265905, 288401, 301815, 329349, 334325, 379475, 443175, 503025, 548915, 601785, 683055, 762261, 865203, 988047, 1002975, 1138425, 1270435, 1329525, 1442005, 1509075, 1646745, 2085877, 2286783, 2595609, 2744575, 3008925, 3415275, 3811305, 4326015, 4720669, 4940235, 6257631, 6352175, 7210025, 8233725, 10429385, 11433915, 12978045, 14162007, 18772893, 19056525, 21630075, 23603345, 24701175, 31288155, 42486021, 52146925, 57169575, 64890225, 70810035, 89692711, 93864465, 118016725, 156440775, 212430105, 269078133, 354050175, 448463555, 469322325, 807234399, 1062150525, 1345390665, 2242317775, 4036171995, 6726953325, 20180859975]

約数ペア:

[(1, 20180859975), (3, 6726953325), (5, 4036171995), (9, 2242317775), (15, 1345390665), (19, 1062150525), (25, 807234399), (43, 469322325), (45, 448463555), (57, 354050175), (75, 269078133), (95, 212430105), (129, 156440775), (171, 118016725), (215, 93864465), (225, 89692711), (285, 70810035), (311, 64890225), (353, 57169575), (387, 52146925), (475, 42486021), (645, 31288155), (817, 24701175), (855, 23603345), (933, 21630075), (1059, 19056525), (1075, 18772893), (1425, 14162007), (1555, 12978045), (1765, 11433915), (1935, 10429385), (2451, 8233725), (2799, 7210025), (3177, 6352175), (3225, 6257631), (4085, 4940235), (4275, 4720669), (4665, 4326015), (5295, 3811305), (5909, 3415275), (6707, 3008925), (7353, 2744575), (7775, 2595609), (8825, 2286783), (9675, 2085877), (12255, 1646745), (13373, 1509075), (13995, 1442005), (15179, 1329525), (15885, 1270435), (17727, 1138425), (20121, 1002975), (20425, 988047), (23325, 865203), (26475, 762261), (29545, 683055), (33535, 601785), (36765, 548915), (40119, 503025), (45537, 443175), (53181, 379475), (60363, 334325), (61275, 329349), (66865, 301815), (69975, 288401), (75895, 265905), (79425, 254087), (88635, 227685), (100605, 200595), (109783, 183825), (120357, 167675), (136611, 147725)]