1990490880

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{74051}}^1$

素因数の和:74082

約数の個数: 144

約数和(自身を含む): 7265389824

約数和(自身を除く): 5274898944

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 768, 840, 896, 960, 1120, 1280, 1344, 1680, 1792, 1920, 2240, 2688, 3360, 3840, 4480, 5376, 6720, 8960, 13440, 26880, 74051, 148102, 222153, 296204, 370255, 444306, 518357, 592408, 740510, 888612, 1036714, 1110765, 1184816, 1481020, 1555071, 1777224, 2073428, 2221530, 2369632, 2591785, 2962040, 3110142, 3554448, 4146856, 4443060, 4739264, 5183570, 5924080, 6220284, 7108896, 7775355, 8293712, 8886120, 9478528, 10367140, 11848160, 12440568, 14217792, 15550710, 16587424, 17772240, 18957056, 20734280, 23696320, 24881136, 28435584, 31101420, 33174848, 35544480, 41468560, 47392640, 49762272, 56871168, 62202840, 66349696, 71088960, 82937120, 94785280, 99524544, 124405680, 132699392, 142177920, 165874240, 199049088, 248811360, 284355840, 331748480, 398098176, 497622720, 663496960, 995245440, 1990490880]

約数ペア:

[(1, 1990490880), (2, 995245440), (3, 663496960), (4, 497622720), (5, 398098176), (6, 331748480), (7, 284355840), (8, 248811360), (10, 199049088), (12, 165874240), (14, 142177920), (15, 132699392), (16, 124405680), (20, 99524544), (21, 94785280), (24, 82937120), (28, 71088960), (30, 66349696), (32, 62202840), (35, 56871168), (40, 49762272), (42, 47392640), (48, 41468560), (56, 35544480), (60, 33174848), (64, 31101420), (70, 28435584), (80, 24881136), (84, 23696320), (96, 20734280), (105, 18957056), (112, 17772240), (120, 16587424), (128, 15550710), (140, 14217792), (160, 12440568), (168, 11848160), (192, 10367140), (210, 9478528), (224, 8886120), (240, 8293712), (256, 7775355), (280, 7108896), (320, 6220284), (336, 5924080), (384, 5183570), (420, 4739264), (448, 4443060), (480, 4146856), (560, 3554448), (640, 3110142), (672, 2962040), (768, 2591785), (840, 2369632), (896, 2221530), (960, 2073428), (1120, 1777224), (1280, 1555071), (1344, 1481020), (1680, 1184816), (1792, 1110765), (1920, 1036714), (2240, 888612), (2688, 740510), (3360, 592408), (3840, 518357), (4480, 444306), (5376, 370255), (6720, 296204), (8960, 222153), (13440, 148102), (26880, 74051)]