217990920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1867}}^1$

素因数の和:2027

約数の個数: 128

約数和(自身を含む): 753177600

約数和(自身を除く): 535186680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 139, 140, 168, 210, 278, 280, 417, 420, 556, 695, 834, 840, 973, 1112, 1390, 1668, 1867, 1946, 2085, 2780, 2919, 3336, 3734, 3892, 4170, 4865, 5560, 5601, 5838, 7468, 7784, 8340, 9335, 9730, 11202, 11676, 13069, 14595, 14936, 16680, 18670, 19460, 22404, 23352, 26138, 28005, 29190, 37340, 38920, 39207, 44808, 52276, 56010, 58380, 65345, 74680, 78414, 104552, 112020, 116760, 130690, 156828, 196035, 224040, 259513, 261380, 313656, 392070, 519026, 522760, 778539, 784140, 1038052, 1297565, 1557078, 1568280, 1816591, 2076104, 2595130, 3114156, 3633182, 3892695, 5190260, 5449773, 6228312, 7266364, 7785390, 9082955, 10380520, 10899546, 14532728, 15570780, 18165910, 21799092, 27248865, 31141560, 36331820, 43598184, 54497730, 72663640, 108995460, 217990920]

約数ペア:

[(1, 217990920), (2, 108995460), (3, 72663640), (4, 54497730), (5, 43598184), (6, 36331820), (7, 31141560), (8, 27248865), (10, 21799092), (12, 18165910), (14, 15570780), (15, 14532728), (20, 10899546), (21, 10380520), (24, 9082955), (28, 7785390), (30, 7266364), (35, 6228312), (40, 5449773), (42, 5190260), (56, 3892695), (60, 3633182), (70, 3114156), (84, 2595130), (105, 2076104), (120, 1816591), (139, 1568280), (140, 1557078), (168, 1297565), (210, 1038052), (278, 784140), (280, 778539), (417, 522760), (420, 519026), (556, 392070), (695, 313656), (834, 261380), (840, 259513), (973, 224040), (1112, 196035), (1390, 156828), (1668, 130690), (1867, 116760), (1946, 112020), (2085, 104552), (2780, 78414), (2919, 74680), (3336, 65345), (3734, 58380), (3892, 56010), (4170, 52276), (4865, 44808), (5560, 39207), (5601, 38920), (5838, 37340), (7468, 29190), (7784, 28005), (8340, 26138), (9335, 23352), (9730, 22404), (11202, 19460), (11676, 18670), (13069, 16680), (14595, 14936)]