19954550

素因数分解:

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

素因数の和:174

約数の個数: 96

約数和(自身を含む): 47568384

約数和(自身を除く): 27613834

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 71, 73, 77, 110, 142, 146, 154, 175, 275, 350, 355, 365, 385, 497, 511, 550, 710, 730, 770, 781, 803, 994, 1022, 1562, 1606, 1775, 1825, 1925, 2485, 2555, 3550, 3650, 3850, 3905, 4015, 4970, 5110, 5183, 5467, 5621, 7810, 8030, 10366, 10934, 11242, 12425, 12775, 19525, 20075, 24850, 25550, 25915, 27335, 28105, 36281, 39050, 40150, 51830, 54670, 56210, 57013, 72562, 114026, 129575, 136675, 140525, 181405, 259150, 273350, 281050, 285065, 362810, 399091, 570130, 798182, 907025, 1425325, 1814050, 1995455, 2850650, 3990910, 9977275, 19954550]

約数ペア:

[(1, 19954550), (2, 9977275), (5, 3990910), (7, 2850650), (10, 1995455), (11, 1814050), (14, 1425325), (22, 907025), (25, 798182), (35, 570130), (50, 399091), (55, 362810), (70, 285065), (71, 281050), (73, 273350), (77, 259150), (110, 181405), (142, 140525), (146, 136675), (154, 129575), (175, 114026), (275, 72562), (350, 57013), (355, 56210), (365, 54670), (385, 51830), (497, 40150), (511, 39050), (550, 36281), (710, 28105), (730, 27335), (770, 25915), (781, 25550), (803, 24850), (994, 20075), (1022, 19525), (1562, 12775), (1606, 12425), (1775, 11242), (1825, 10934), (1925, 10366), (2485, 8030), (2555, 7810), (3550, 5621), (3650, 5467), (3850, 5183), (3905, 5110), (4015, 4970)]