245351680

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:364

約数の個数: 144

約数和(自身を含む): 679916160

約数和(自身を除く): 434564480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 139, 140, 160, 197, 224, 256, 278, 280, 320, 394, 448, 556, 560, 640, 695, 788, 896, 973, 985, 1112, 1120, 1280, 1379, 1390, 1576, 1792, 1946, 1970, 2224, 2240, 2758, 2780, 3152, 3892, 3940, 4448, 4480, 4865, 5516, 5560, 6304, 6895, 7784, 7880, 8896, 8960, 9730, 11032, 11120, 12608, 13790, 15568, 15760, 17792, 19460, 22064, 22240, 25216, 27383, 27580, 31136, 31520, 35584, 38920, 44128, 44480, 50432, 54766, 55160, 62272, 63040, 77840, 88256, 88960, 109532, 110320, 124544, 126080, 136915, 155680, 176512, 177920, 191681, 219064, 220640, 249088, 252160, 273830, 311360, 353024, 383362, 438128, 441280, 547660, 622720, 766724, 876256, 882560, 958405, 1095320, 1245440, 1533448, 1752512, 1765120, 1916810, 2190640, 3066896, 3505024, 3833620, 4381280, 6133792, 7010048, 7667240, 8762560, 12267584, 15334480, 17525120, 24535168, 30668960, 35050240, 49070336, 61337920, 122675840, 245351680]

約数ペア:

[(1, 245351680), (2, 122675840), (4, 61337920), (5, 49070336), (7, 35050240), (8, 30668960), (10, 24535168), (14, 17525120), (16, 15334480), (20, 12267584), (28, 8762560), (32, 7667240), (35, 7010048), (40, 6133792), (56, 4381280), (64, 3833620), (70, 3505024), (80, 3066896), (112, 2190640), (128, 1916810), (139, 1765120), (140, 1752512), (160, 1533448), (197, 1245440), (224, 1095320), (256, 958405), (278, 882560), (280, 876256), (320, 766724), (394, 622720), (448, 547660), (556, 441280), (560, 438128), (640, 383362), (695, 353024), (788, 311360), (896, 273830), (973, 252160), (985, 249088), (1112, 220640), (1120, 219064), (1280, 191681), (1379, 177920), (1390, 176512), (1576, 155680), (1792, 136915), (1946, 126080), (1970, 124544), (2224, 110320), (2240, 109532), (2758, 88960), (2780, 88256), (3152, 77840), (3892, 63040), (3940, 62272), (4448, 55160), (4480, 54766), (4865, 50432), (5516, 44480), (5560, 44128), (6304, 38920), (6895, 35584), (7784, 31520), (7880, 31136), (8896, 27580), (8960, 27383), (9730, 25216), (11032, 22240), (11120, 22064), (12608, 19460), (13790, 17792), (15568, 15760)]