78547840

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:312

約数の個数: 128

約数和(自身を含む): 218116800

約数和(自身を除く): 139568960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 89, 112, 128, 140, 160, 178, 197, 224, 280, 320, 356, 394, 445, 448, 560, 623, 640, 712, 788, 890, 896, 985, 1120, 1246, 1379, 1424, 1576, 1780, 1970, 2240, 2492, 2758, 2848, 3115, 3152, 3560, 3940, 4480, 4984, 5516, 5696, 6230, 6304, 6895, 7120, 7880, 9968, 11032, 11392, 12460, 12608, 13790, 14240, 15760, 17533, 19936, 22064, 24920, 25216, 27580, 28480, 31520, 35066, 39872, 44128, 49840, 55160, 56960, 63040, 70132, 79744, 87665, 88256, 99680, 110320, 122731, 126080, 140264, 175330, 176512, 199360, 220640, 245462, 280528, 350660, 398720, 441280, 490924, 561056, 613655, 701320, 882560, 981848, 1122112, 1227310, 1402640, 1963696, 2244224, 2454620, 2805280, 3927392, 4909240, 5610560, 7854784, 9818480, 11221120, 15709568, 19636960, 39273920, 78547840]

約数ペア:

[(1, 78547840), (2, 39273920), (4, 19636960), (5, 15709568), (7, 11221120), (8, 9818480), (10, 7854784), (14, 5610560), (16, 4909240), (20, 3927392), (28, 2805280), (32, 2454620), (35, 2244224), (40, 1963696), (56, 1402640), (64, 1227310), (70, 1122112), (80, 981848), (89, 882560), (112, 701320), (128, 613655), (140, 561056), (160, 490924), (178, 441280), (197, 398720), (224, 350660), (280, 280528), (320, 245462), (356, 220640), (394, 199360), (445, 176512), (448, 175330), (560, 140264), (623, 126080), (640, 122731), (712, 110320), (788, 99680), (890, 88256), (896, 87665), (985, 79744), (1120, 70132), (1246, 63040), (1379, 56960), (1424, 55160), (1576, 49840), (1780, 44128), (1970, 39872), (2240, 35066), (2492, 31520), (2758, 28480), (2848, 27580), (3115, 25216), (3152, 24920), (3560, 22064), (3940, 19936), (4480, 17533), (4984, 15760), (5516, 14240), (5696, 13790), (6230, 12608), (6304, 12460), (6895, 11392), (7120, 11032), (7880, 9968)]