7981820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 21482496

約数和(自身を除く): 13500676

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 71, 73, 77, 110, 140, 142, 146, 154, 220, 284, 292, 308, 355, 365, 385, 497, 511, 710, 730, 770, 781, 803, 994, 1022, 1420, 1460, 1540, 1562, 1606, 1988, 2044, 2485, 2555, 3124, 3212, 3905, 4015, 4970, 5110, 5183, 5467, 5621, 7810, 8030, 9940, 10220, 10366, 10934, 11242, 15620, 16060, 20732, 21868, 22484, 25915, 27335, 28105, 36281, 51830, 54670, 56210, 57013, 72562, 103660, 109340, 112420, 114026, 145124, 181405, 228052, 285065, 362810, 399091, 570130, 725620, 798182, 1140260, 1596364, 1995455, 3990910, 7981820]

約数ペア:

[(1, 7981820), (2, 3990910), (4, 1995455), (5, 1596364), (7, 1140260), (10, 798182), (11, 725620), (14, 570130), (20, 399091), (22, 362810), (28, 285065), (35, 228052), (44, 181405), (55, 145124), (70, 114026), (71, 112420), (73, 109340), (77, 103660), (110, 72562), (140, 57013), (142, 56210), (146, 54670), (154, 51830), (220, 36281), (284, 28105), (292, 27335), (308, 25915), (355, 22484), (365, 21868), (385, 20732), (497, 16060), (511, 15620), (710, 11242), (730, 10934), (770, 10366), (781, 10220), (803, 9940), (994, 8030), (1022, 7810), (1420, 5621), (1460, 5467), (1540, 5183), (1562, 5110), (1606, 4970), (1988, 4015), (2044, 3905), (2485, 3212), (2555, 3124)]