19801860225

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1\times {\mathrm{2063}}^1$

素因数の和:2519

約数の個数: 96

約数和(自身を含む): 38328975360

約数和(自身を除く): 18527115135

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 47, 75, 105, 141, 175, 235, 329, 389, 525, 705, 987, 1167, 1175, 1645, 1945, 2063, 2723, 3525, 4935, 5835, 6189, 8169, 8225, 9725, 10315, 13615, 14441, 18283, 24675, 29175, 30945, 40845, 43323, 51575, 54849, 68075, 72205, 91415, 96961, 127981, 154725, 204225, 216615, 274245, 290883, 361025, 383943, 457075, 484805, 639905, 678727, 802507, 1083075, 1371225, 1454415, 1919715, 2036181, 2407521, 2424025, 3199525, 3393635, 4012535, 5617549, 7272075, 9598575, 10180905, 12037605, 16852647, 16968175, 20062675, 28087745, 37717829, 50904525, 60188025, 84263235, 113153487, 140438725, 188589145, 264024803, 421316175, 565767435, 792074409, 942945725, 1320124015, 2828837175, 3960372045, 6600620075, 19801860225]

約数ペア:

[(1, 19801860225), (3, 6600620075), (5, 3960372045), (7, 2828837175), (15, 1320124015), (21, 942945725), (25, 792074409), (35, 565767435), (47, 421316175), (75, 264024803), (105, 188589145), (141, 140438725), (175, 113153487), (235, 84263235), (329, 60188025), (389, 50904525), (525, 37717829), (705, 28087745), (987, 20062675), (1167, 16968175), (1175, 16852647), (1645, 12037605), (1945, 10180905), (2063, 9598575), (2723, 7272075), (3525, 5617549), (4935, 4012535), (5835, 3393635), (6189, 3199525), (8169, 2424025), (8225, 2407521), (9725, 2036181), (10315, 1919715), (13615, 1454415), (14441, 1371225), (18283, 1083075), (24675, 802507), (29175, 678727), (30945, 639905), (40845, 484805), (43323, 457075), (51575, 383943), (54849, 361025), (68075, 290883), (72205, 274245), (91415, 216615), (96961, 204225), (127981, 154725)]