20091031875

素因数分解:

$3^2\times 5^4\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{1871}}^1$

素因数の和:2003

約数の個数: 120

約数和(自身を含む): 38316934656

約数和(自身を除く): 18225902781

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 83, 115, 125, 207, 225, 249, 345, 375, 415, 575, 625, 747, 1035, 1125, 1245, 1725, 1871, 1875, 1909, 2075, 2875, 3735, 5175, 5613, 5625, 5727, 6225, 8625, 9355, 9545, 10375, 14375, 16839, 17181, 18675, 25875, 28065, 28635, 31125, 43033, 43125, 46775, 47725, 51875, 84195, 85905, 93375, 129099, 129375, 140325, 143175, 155293, 155625, 215165, 233875, 238625, 387297, 420975, 429525, 465879, 466875, 645495, 701625, 715875, 776465, 1075825, 1169375, 1193125, 1397637, 1936485, 2104875, 2147625, 2329395, 3227475, 3508125, 3571739, 3579375, 3882325, 5379125, 6988185, 9682425, 10524375, 10715217, 10738125, 11646975, 16137375, 17858695, 19411625, 26895625, 32145651, 34940925, 48412125, 53576085, 58234875, 80686875, 89293475, 97058125, 160728255, 174704625, 242060625, 267880425, 291174375, 446467375, 803641275, 873523125, 1339402125, 2232336875, 4018206375, 6697010625, 20091031875]

約数ペア:

[(1, 20091031875), (3, 6697010625), (5, 4018206375), (9, 2232336875), (15, 1339402125), (23, 873523125), (25, 803641275), (45, 446467375), (69, 291174375), (75, 267880425), (83, 242060625), (115, 174704625), (125, 160728255), (207, 97058125), (225, 89293475), (249, 80686875), (345, 58234875), (375, 53576085), (415, 48412125), (575, 34940925), (625, 32145651), (747, 26895625), (1035, 19411625), (1125, 17858695), (1245, 16137375), (1725, 11646975), (1871, 10738125), (1875, 10715217), (1909, 10524375), (2075, 9682425), (2875, 6988185), (3735, 5379125), (5175, 3882325), (5613, 3579375), (5625, 3571739), (5727, 3508125), (6225, 3227475), (8625, 2329395), (9355, 2147625), (9545, 2104875), (10375, 1936485), (14375, 1397637), (16839, 1193125), (17181, 1169375), (18675, 1075825), (25875, 776465), (28065, 715875), (28635, 701625), (31125, 645495), (43033, 466875), (43125, 465879), (46775, 429525), (47725, 420975), (51875, 387297), (84195, 238625), (85905, 233875), (93375, 215165), (129099, 155625), (129375, 155293), (140325, 143175)]