319681280

素因数分解:

$2^8\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1823}}^1$

素因数の和:1981

約数の個数: 72

約数和(自身を含む): 771748992

約数和(自身を除く): 452067712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 137, 160, 256, 274, 320, 548, 640, 685, 1096, 1280, 1370, 1823, 2192, 2740, 3646, 4384, 5480, 7292, 8768, 9115, 10960, 14584, 17536, 18230, 21920, 29168, 35072, 36460, 43840, 58336, 72920, 87680, 116672, 145840, 175360, 233344, 249751, 291680, 466688, 499502, 583360, 999004, 1166720, 1248755, 1998008, 2333440, 2497510, 3996016, 4995020, 7992032, 9990040, 15984064, 19980080, 31968128, 39960160, 63936256, 79920320, 159840640, 319681280]

約数ペア:

[(1, 319681280), (2, 159840640), (4, 79920320), (5, 63936256), (8, 39960160), (10, 31968128), (16, 19980080), (20, 15984064), (32, 9990040), (40, 7992032), (64, 4995020), (80, 3996016), (128, 2497510), (137, 2333440), (160, 1998008), (256, 1248755), (274, 1166720), (320, 999004), (548, 583360), (640, 499502), (685, 466688), (1096, 291680), (1280, 249751), (1370, 233344), (1823, 175360), (2192, 145840), (2740, 116672), (3646, 87680), (4384, 72920), (5480, 58336), (7292, 43840), (8768, 36460), (9115, 35072), (10960, 29168), (14584, 21920), (17536, 18230)]