81799960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:241

約数の個数: 128

約数和(自身を含む): 214617600

約数和(自身を除く): 132817640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 59, 88, 92, 110, 115, 118, 137, 184, 220, 230, 236, 253, 274, 295, 440, 460, 472, 506, 548, 590, 649, 685, 920, 1012, 1096, 1180, 1265, 1298, 1357, 1370, 1507, 2024, 2360, 2530, 2596, 2714, 2740, 3014, 3151, 3245, 5060, 5192, 5428, 5480, 6028, 6302, 6490, 6785, 7535, 8083, 10120, 10856, 12056, 12604, 12980, 13570, 14927, 15070, 15755, 16166, 25208, 25960, 27140, 29854, 30140, 31510, 32332, 34661, 40415, 54280, 59708, 60280, 63020, 64664, 69322, 74635, 80830, 88913, 119416, 126040, 138644, 149270, 161660, 173305, 177826, 185909, 277288, 298540, 323320, 346610, 355652, 371818, 444565, 597080, 693220, 711304, 743636, 889130, 929545, 1386440, 1487272, 1778260, 1859090, 2044999, 3556520, 3718180, 4089998, 7436360, 8179996, 10224995, 16359992, 20449990, 40899980, 81799960]

約数ペア:

[(1, 81799960), (2, 40899980), (4, 20449990), (5, 16359992), (8, 10224995), (10, 8179996), (11, 7436360), (20, 4089998), (22, 3718180), (23, 3556520), (40, 2044999), (44, 1859090), (46, 1778260), (55, 1487272), (59, 1386440), (88, 929545), (92, 889130), (110, 743636), (115, 711304), (118, 693220), (137, 597080), (184, 444565), (220, 371818), (230, 355652), (236, 346610), (253, 323320), (274, 298540), (295, 277288), (440, 185909), (460, 177826), (472, 173305), (506, 161660), (548, 149270), (590, 138644), (649, 126040), (685, 119416), (920, 88913), (1012, 80830), (1096, 74635), (1180, 69322), (1265, 64664), (1298, 63020), (1357, 60280), (1370, 59708), (1507, 54280), (2024, 40415), (2360, 34661), (2530, 32332), (2596, 31510), (2714, 30140), (2740, 29854), (3014, 27140), (3151, 25960), (3245, 25208), (5060, 16166), (5192, 15755), (5428, 15070), (5480, 14927), (6028, 13570), (6302, 12980), (6490, 12604), (6785, 12056), (7535, 10856), (8083, 10120)]