81868990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{461}}^1$

素因数の和:577

約数の個数: 64

約数和(自身を含む): 175633920

約数和(自身を除く): 93764930

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 59, 70, 86, 118, 215, 295, 301, 413, 430, 461, 590, 602, 826, 922, 1505, 2065, 2305, 2537, 3010, 3227, 4130, 4610, 5074, 6454, 12685, 16135, 17759, 19823, 25370, 27199, 32270, 35518, 39646, 54398, 88795, 99115, 135995, 138761, 177590, 190393, 198230, 271990, 277522, 380786, 693805, 951965, 1169557, 1387610, 1903930, 2339114, 5847785, 8186899, 11695570, 16373798, 40934495, 81868990]

約数ペア:

[(1, 81868990), (2, 40934495), (5, 16373798), (7, 11695570), (10, 8186899), (14, 5847785), (35, 2339114), (43, 1903930), (59, 1387610), (70, 1169557), (86, 951965), (118, 693805), (215, 380786), (295, 277522), (301, 271990), (413, 198230), (430, 190393), (461, 177590), (590, 138761), (602, 135995), (826, 99115), (922, 88795), (1505, 54398), (2065, 39646), (2305, 35518), (2537, 32270), (3010, 27199), (3227, 25370), (4130, 19823), (4610, 17759), (5074, 16135), (6454, 12685)]