216778840

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1\times {\mathrm{307}}^1$

素因数の和:584

約数の個数: 64

約数和(自身を含む): 496742400

約数和(自身を除く): 279963560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 139, 254, 278, 307, 508, 556, 614, 635, 695, 1016, 1112, 1228, 1270, 1390, 1535, 2456, 2540, 2780, 3070, 5080, 5560, 6140, 12280, 17653, 35306, 38989, 42673, 70612, 77978, 85346, 88265, 141224, 155956, 170692, 176530, 194945, 213365, 311912, 341384, 353060, 389890, 426730, 706120, 779780, 853460, 1559560, 1706920, 5419471, 10838942, 21677884, 27097355, 43355768, 54194710, 108389420, 216778840]

約数ペア:

[(1, 216778840), (2, 108389420), (4, 54194710), (5, 43355768), (8, 27097355), (10, 21677884), (20, 10838942), (40, 5419471), (127, 1706920), (139, 1559560), (254, 853460), (278, 779780), (307, 706120), (508, 426730), (556, 389890), (614, 353060), (635, 341384), (695, 311912), (1016, 213365), (1112, 194945), (1228, 176530), (1270, 170692), (1390, 155956), (1535, 141224), (2456, 88265), (2540, 85346), (2780, 77978), (3070, 70612), (5080, 42673), (5560, 38989), (6140, 35306), (12280, 17653)]