81681120

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{433}}^1$

素因数の和:585

約数の個数: 144

約数和(自身を含む): 281513232

約数和(自身を除く): 199832112

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 131, 144, 160, 180, 240, 262, 288, 360, 393, 433, 480, 524, 655, 720, 786, 866, 1048, 1179, 1299, 1310, 1440, 1572, 1732, 1965, 2096, 2165, 2358, 2598, 2620, 3144, 3464, 3897, 3930, 4192, 4330, 4716, 5196, 5240, 5895, 6288, 6495, 6928, 7794, 7860, 8660, 9432, 10392, 10480, 11790, 12576, 12990, 13856, 15588, 15720, 17320, 18864, 19485, 20784, 20960, 23580, 25980, 31176, 31440, 34640, 37728, 38970, 41568, 47160, 51960, 56723, 62352, 62880, 69280, 77940, 94320, 103920, 113446, 124704, 155880, 170169, 188640, 207840, 226892, 283615, 311760, 340338, 453784, 510507, 567230, 623520, 680676, 850845, 907568, 1021014, 1134460, 1361352, 1701690, 1815136, 2042028, 2268920, 2552535, 2722704, 3403380, 4084056, 4537840, 5105070, 5445408, 6806760, 8168112, 9075680, 10210140, 13613520, 16336224, 20420280, 27227040, 40840560, 81681120]

約数ペア:

[(1, 81681120), (2, 40840560), (3, 27227040), (4, 20420280), (5, 16336224), (6, 13613520), (8, 10210140), (9, 9075680), (10, 8168112), (12, 6806760), (15, 5445408), (16, 5105070), (18, 4537840), (20, 4084056), (24, 3403380), (30, 2722704), (32, 2552535), (36, 2268920), (40, 2042028), (45, 1815136), (48, 1701690), (60, 1361352), (72, 1134460), (80, 1021014), (90, 907568), (96, 850845), (120, 680676), (131, 623520), (144, 567230), (160, 510507), (180, 453784), (240, 340338), (262, 311760), (288, 283615), (360, 226892), (393, 207840), (433, 188640), (480, 170169), (524, 155880), (655, 124704), (720, 113446), (786, 103920), (866, 94320), (1048, 77940), (1179, 69280), (1299, 62880), (1310, 62352), (1440, 56723), (1572, 51960), (1732, 47160), (1965, 41568), (2096, 38970), (2165, 37728), (2358, 34640), (2598, 31440), (2620, 31176), (3144, 25980), (3464, 23580), (3897, 20960), (3930, 20784), (4192, 19485), (4330, 18864), (4716, 17320), (5196, 15720), (5240, 15588), (5895, 13856), (6288, 12990), (6495, 12576), (6928, 11790), (7794, 10480), (7860, 10392), (8660, 9432)]