128123800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{23}}^2\times {\mathrm{173}}^1$

素因数の和:242

約数の個数: 144

約数和(自身を含む): 357945840

約数和(自身を除く): 229822040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 25, 28, 35, 40, 46, 50, 56, 70, 92, 100, 115, 140, 161, 173, 175, 184, 200, 230, 280, 322, 346, 350, 460, 529, 575, 644, 692, 700, 805, 865, 920, 1058, 1150, 1211, 1288, 1384, 1400, 1610, 1730, 2116, 2300, 2422, 2645, 3220, 3460, 3703, 3979, 4025, 4232, 4325, 4600, 4844, 5290, 6055, 6440, 6920, 7406, 7958, 8050, 8650, 9688, 10580, 12110, 13225, 14812, 15916, 16100, 17300, 18515, 19895, 21160, 24220, 26450, 27853, 29624, 30275, 31832, 32200, 34600, 37030, 39790, 48440, 52900, 55706, 60550, 74060, 79580, 91517, 92575, 99475, 105800, 111412, 121100, 139265, 148120, 159160, 183034, 185150, 198950, 222824, 242200, 278530, 366068, 370300, 397900, 457585, 557060, 640619, 696325, 732136, 740600, 795800, 915170, 1114120, 1281238, 1392650, 1830340, 2287925, 2562476, 2785300, 3203095, 3660680, 4575850, 5124952, 5570600, 6406190, 9151700, 12812380, 16015475, 18303400, 25624760, 32030950, 64061900, 128123800]

約数ペア:

[(1, 128123800), (2, 64061900), (4, 32030950), (5, 25624760), (7, 18303400), (8, 16015475), (10, 12812380), (14, 9151700), (20, 6406190), (23, 5570600), (25, 5124952), (28, 4575850), (35, 3660680), (40, 3203095), (46, 2785300), (50, 2562476), (56, 2287925), (70, 1830340), (92, 1392650), (100, 1281238), (115, 1114120), (140, 915170), (161, 795800), (173, 740600), (175, 732136), (184, 696325), (200, 640619), (230, 557060), (280, 457585), (322, 397900), (346, 370300), (350, 366068), (460, 278530), (529, 242200), (575, 222824), (644, 198950), (692, 185150), (700, 183034), (805, 159160), (865, 148120), (920, 139265), (1058, 121100), (1150, 111412), (1211, 105800), (1288, 99475), (1384, 92575), (1400, 91517), (1610, 79580), (1730, 74060), (2116, 60550), (2300, 55706), (2422, 52900), (2645, 48440), (3220, 39790), (3460, 37030), (3703, 34600), (3979, 32200), (4025, 31832), (4232, 30275), (4325, 29624), (4600, 27853), (4844, 26450), (5290, 24220), (6055, 21160), (6440, 19895), (6920, 18515), (7406, 17300), (7958, 16100), (8050, 15916), (8650, 14812), (9688, 13225), (10580, 12110)]