19980430680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{642871}}^1$

素因数の和:642929

約数の個数: 128

約数和(自身を含む): 70355911680

約数和(自身を除く): 50375481000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 56, 60, 70, 74, 84, 105, 111, 120, 140, 148, 168, 185, 210, 222, 259, 280, 296, 370, 420, 444, 518, 555, 740, 777, 840, 888, 1036, 1110, 1295, 1480, 1554, 2072, 2220, 2590, 3108, 3885, 4440, 5180, 6216, 7770, 10360, 15540, 31080, 642871, 1285742, 1928613, 2571484, 3214355, 3857226, 4500097, 5142968, 6428710, 7714452, 9000194, 9643065, 12857420, 13500291, 15428904, 18000388, 19286130, 22500485, 23786227, 25714840, 27000582, 36000776, 38572260, 45000970, 47572454, 54001164, 67501455, 71358681, 77144520, 90001940, 95144908, 108002328, 118931135, 135002910, 142717362, 166503589, 180003880, 190289816, 237862270, 270005820, 285434724, 333007178, 356793405, 475724540, 499510767, 540011640, 570869448, 666014356, 713586810, 832517945, 951449080, 999021534, 1332028712, 1427173620, 1665035890, 1998043068, 2497553835, 2854347240, 3330071780, 3996086136, 4995107670, 6660143560, 9990215340, 19980430680]

約数ペア:

[(1, 19980430680), (2, 9990215340), (3, 6660143560), (4, 4995107670), (5, 3996086136), (6, 3330071780), (7, 2854347240), (8, 2497553835), (10, 1998043068), (12, 1665035890), (14, 1427173620), (15, 1332028712), (20, 999021534), (21, 951449080), (24, 832517945), (28, 713586810), (30, 666014356), (35, 570869448), (37, 540011640), (40, 499510767), (42, 475724540), (56, 356793405), (60, 333007178), (70, 285434724), (74, 270005820), (84, 237862270), (105, 190289816), (111, 180003880), (120, 166503589), (140, 142717362), (148, 135002910), (168, 118931135), (185, 108002328), (210, 95144908), (222, 90001940), (259, 77144520), (280, 71358681), (296, 67501455), (370, 54001164), (420, 47572454), (444, 45000970), (518, 38572260), (555, 36000776), (740, 27000582), (777, 25714840), (840, 23786227), (888, 22500485), (1036, 19286130), (1110, 18000388), (1295, 15428904), (1480, 13500291), (1554, 12857420), (2072, 9643065), (2220, 9000194), (2590, 7714452), (3108, 6428710), (3885, 5142968), (4440, 4500097), (5180, 3857226), (6216, 3214355), (7770, 2571484), (10360, 1928613), (15540, 1285742), (31080, 642871)]