19870760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:187

約数の個数: 128

約数和(自身を含む): 56609280

約数和(自身を除く): 36738520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 53, 56, 65, 70, 91, 103, 104, 106, 130, 140, 182, 206, 212, 260, 265, 280, 364, 371, 412, 424, 455, 515, 520, 530, 689, 721, 728, 742, 824, 910, 1030, 1060, 1339, 1378, 1442, 1484, 1820, 1855, 2060, 2120, 2678, 2756, 2884, 2968, 3445, 3605, 3640, 3710, 4120, 4823, 5356, 5459, 5512, 5768, 6695, 6890, 7210, 7420, 9373, 9646, 10712, 10918, 13390, 13780, 14420, 14840, 18746, 19292, 21836, 24115, 26780, 27295, 27560, 28840, 37492, 38213, 38584, 43672, 46865, 48230, 53560, 54590, 70967, 74984, 76426, 93730, 96460, 109180, 141934, 152852, 187460, 191065, 192920, 218360, 283868, 305704, 354835, 374920, 382130, 496769, 567736, 709670, 764260, 993538, 1419340, 1528520, 1987076, 2483845, 2838680, 3974152, 4967690, 9935380, 19870760]

約数ペア:

[(1, 19870760), (2, 9935380), (4, 4967690), (5, 3974152), (7, 2838680), (8, 2483845), (10, 1987076), (13, 1528520), (14, 1419340), (20, 993538), (26, 764260), (28, 709670), (35, 567736), (40, 496769), (52, 382130), (53, 374920), (56, 354835), (65, 305704), (70, 283868), (91, 218360), (103, 192920), (104, 191065), (106, 187460), (130, 152852), (140, 141934), (182, 109180), (206, 96460), (212, 93730), (260, 76426), (265, 74984), (280, 70967), (364, 54590), (371, 53560), (412, 48230), (424, 46865), (455, 43672), (515, 38584), (520, 38213), (530, 37492), (689, 28840), (721, 27560), (728, 27295), (742, 26780), (824, 24115), (910, 21836), (1030, 19292), (1060, 18746), (1339, 14840), (1378, 14420), (1442, 13780), (1484, 13390), (1820, 10918), (1855, 10712), (2060, 9646), (2120, 9373), (2678, 7420), (2756, 7210), (2884, 6890), (2968, 6695), (3445, 5768), (3605, 5512), (3640, 5459), (3710, 5356), (4120, 4823)]