389935360

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^2\times {\mathrm{317}}^1$

素因数の和:400

約数の個数: 108

約数和(自身を含む): 968163084

約数和(自身を除く): 578227724

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 317, 320, 496, 620, 634, 640, 961, 992, 1240, 1268, 1280, 1585, 1922, 1984, 2480, 2536, 3170, 3844, 3968, 4805, 4960, 5072, 6340, 7688, 7936, 9610, 9827, 9920, 10144, 12680, 15376, 19220, 19654, 19840, 20288, 25360, 30752, 38440, 39308, 39680, 40576, 49135, 50720, 61504, 76880, 78616, 81152, 98270, 101440, 123008, 153760, 157232, 196540, 202880, 246016, 304637, 307520, 314464, 393080, 405760, 609274, 615040, 628928, 786160, 1218548, 1230080, 1257856, 1523185, 1572320, 2437096, 2515712, 3046370, 3144640, 4874192, 6092740, 6289280, 9748384, 12185480, 12578560, 19496768, 24370960, 38993536, 48741920, 77987072, 97483840, 194967680, 389935360]

約数ペア:

[(1, 389935360), (2, 194967680), (4, 97483840), (5, 77987072), (8, 48741920), (10, 38993536), (16, 24370960), (20, 19496768), (31, 12578560), (32, 12185480), (40, 9748384), (62, 6289280), (64, 6092740), (80, 4874192), (124, 3144640), (128, 3046370), (155, 2515712), (160, 2437096), (248, 1572320), (256, 1523185), (310, 1257856), (317, 1230080), (320, 1218548), (496, 786160), (620, 628928), (634, 615040), (640, 609274), (961, 405760), (992, 393080), (1240, 314464), (1268, 307520), (1280, 304637), (1585, 246016), (1922, 202880), (1984, 196540), (2480, 157232), (2536, 153760), (3170, 123008), (3844, 101440), (3968, 98270), (4805, 81152), (4960, 78616), (5072, 76880), (6340, 61504), (7688, 50720), (7936, 49135), (9610, 40576), (9827, 39680), (9920, 39308), (10144, 38440), (12680, 30752), (15376, 25360), (19220, 20288), (19654, 19840)]