1987866880

素因数分解:

$2^8\times 5^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:432

約数の個数: 144

約数和(自身を含む): 4916588544

約数和(自身を除く): 2928721664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 173, 188, 191, 235, 256, 320, 346, 376, 382, 470, 640, 692, 752, 764, 865, 940, 955, 1280, 1384, 1504, 1528, 1730, 1880, 1910, 2768, 3008, 3056, 3460, 3760, 3820, 5536, 6016, 6112, 6920, 7520, 7640, 8131, 8977, 11072, 12032, 12224, 13840, 15040, 15280, 16262, 17954, 22144, 24448, 27680, 30080, 30560, 32524, 33043, 35908, 40655, 44288, 44885, 48896, 55360, 60160, 61120, 65048, 66086, 71816, 81310, 89770, 110720, 122240, 130096, 132172, 143632, 162620, 165215, 179540, 221440, 244480, 260192, 264344, 287264, 325240, 330430, 359080, 520384, 528688, 574528, 650480, 660860, 718160, 1040768, 1057376, 1149056, 1300960, 1321720, 1436320, 1553021, 2081536, 2114752, 2298112, 2601920, 2643440, 2872640, 3106042, 4229504, 5203840, 5286880, 5745280, 6212084, 7765105, 8459008, 10407680, 10573760, 11490560, 12424168, 15530210, 21147520, 24848336, 31060420, 42295040, 49696672, 62120840, 99393344, 124241680, 198786688, 248483360, 397573376, 496966720, 993933440, 1987866880]

約数ペア:

[(1, 1987866880), (2, 993933440), (4, 496966720), (5, 397573376), (8, 248483360), (10, 198786688), (16, 124241680), (20, 99393344), (32, 62120840), (40, 49696672), (47, 42295040), (64, 31060420), (80, 24848336), (94, 21147520), (128, 15530210), (160, 12424168), (173, 11490560), (188, 10573760), (191, 10407680), (235, 8459008), (256, 7765105), (320, 6212084), (346, 5745280), (376, 5286880), (382, 5203840), (470, 4229504), (640, 3106042), (692, 2872640), (752, 2643440), (764, 2601920), (865, 2298112), (940, 2114752), (955, 2081536), (1280, 1553021), (1384, 1436320), (1504, 1321720), (1528, 1300960), (1730, 1149056), (1880, 1057376), (1910, 1040768), (2768, 718160), (3008, 660860), (3056, 650480), (3460, 574528), (3760, 528688), (3820, 520384), (5536, 359080), (6016, 330430), (6112, 325240), (6920, 287264), (7520, 264344), (7640, 260192), (8131, 244480), (8977, 221440), (11072, 179540), (12032, 165215), (12224, 162620), (13840, 143632), (15040, 132172), (15280, 130096), (16262, 122240), (17954, 110720), (22144, 89770), (24448, 81310), (27680, 71816), (30080, 66086), (30560, 65048), (32524, 61120), (33043, 60160), (35908, 55360), (40655, 48896), (44288, 44885)]