20199803920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2311}}^1\times {\mathrm{6427}}^1$

素因数の和:8768

約数の個数: 80

約数和(自身を含む): 49756422528

約数和(自身を除く): 29556618608

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 2311, 4622, 6427, 9244, 11555, 12854, 18488, 23110, 25708, 32135, 36976, 39287, 46220, 51416, 64270, 78574, 92440, 102832, 109259, 128540, 157148, 184880, 196435, 218518, 257080, 314296, 392870, 437036, 514160, 546295, 628592, 785740, 874072, 1092590, 1571480, 1748144, 2185180, 3142960, 4370360, 8740720, 14852797, 29705594, 59411188, 74263985, 118822376, 148527970, 237644752, 252497549, 297055940, 504995098, 594111880, 1009990196, 1188223760, 1262487745, 2019980392, 2524975490, 4039960784, 5049950980, 10099901960, 20199803920]

約数ペア:

[(1, 20199803920), (2, 10099901960), (4, 5049950980), (5, 4039960784), (8, 2524975490), (10, 2019980392), (16, 1262487745), (17, 1188223760), (20, 1009990196), (34, 594111880), (40, 504995098), (68, 297055940), (80, 252497549), (85, 237644752), (136, 148527970), (170, 118822376), (272, 74263985), (340, 59411188), (680, 29705594), (1360, 14852797), (2311, 8740720), (4622, 4370360), (6427, 3142960), (9244, 2185180), (11555, 1748144), (12854, 1571480), (18488, 1092590), (23110, 874072), (25708, 785740), (32135, 628592), (36976, 546295), (39287, 514160), (46220, 437036), (51416, 392870), (64270, 314296), (78574, 257080), (92440, 218518), (102832, 196435), (109259, 184880), (128540, 157148)]