77816960

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:278

約数の個数: 128

約数和(自身を含む): 205632000

約数和(自身を除く): 127815040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 47, 52, 64, 65, 80, 94, 104, 128, 130, 160, 188, 199, 208, 235, 260, 320, 376, 398, 416, 470, 520, 611, 640, 752, 796, 832, 940, 995, 1040, 1222, 1504, 1592, 1664, 1880, 1990, 2080, 2444, 2587, 3008, 3055, 3184, 3760, 3980, 4160, 4888, 5174, 6016, 6110, 6368, 7520, 7960, 8320, 9353, 9776, 10348, 12220, 12736, 12935, 15040, 15920, 18706, 19552, 20696, 24440, 25472, 25870, 30080, 31840, 37412, 39104, 41392, 46765, 48880, 51740, 63680, 74824, 78208, 82784, 93530, 97760, 103480, 121589, 127360, 149648, 165568, 187060, 195520, 206960, 243178, 299296, 331136, 374120, 391040, 413920, 486356, 598592, 607945, 748240, 827840, 972712, 1197184, 1215890, 1496480, 1655680, 1945424, 2431780, 2992960, 3890848, 4863560, 5985920, 7781696, 9727120, 15563392, 19454240, 38908480, 77816960]

約数ペア:

[(1, 77816960), (2, 38908480), (4, 19454240), (5, 15563392), (8, 9727120), (10, 7781696), (13, 5985920), (16, 4863560), (20, 3890848), (26, 2992960), (32, 2431780), (40, 1945424), (47, 1655680), (52, 1496480), (64, 1215890), (65, 1197184), (80, 972712), (94, 827840), (104, 748240), (128, 607945), (130, 598592), (160, 486356), (188, 413920), (199, 391040), (208, 374120), (235, 331136), (260, 299296), (320, 243178), (376, 206960), (398, 195520), (416, 187060), (470, 165568), (520, 149648), (611, 127360), (640, 121589), (752, 103480), (796, 97760), (832, 93530), (940, 82784), (995, 78208), (1040, 74824), (1222, 63680), (1504, 51740), (1592, 48880), (1664, 46765), (1880, 41392), (1990, 39104), (2080, 37412), (2444, 31840), (2587, 30080), (3008, 25870), (3055, 25472), (3184, 24440), (3760, 20696), (3980, 19552), (4160, 18706), (4888, 15920), (5174, 15040), (6016, 12935), (6110, 12736), (6368, 12220), (7520, 10348), (7960, 9776), (8320, 9353)]