81879840

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{8123}}^1$

素因数の和:8151

約数の個数: 144

約数和(自身を含む): 319370688

約数和(自身を除く): 237490848

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 3360, 5040, 8123, 10080, 16246, 24369, 32492, 40615, 48738, 56861, 64984, 73107, 81230, 97476, 113722, 121845, 129968, 146214, 162460, 170583, 194952, 227444, 243690, 259936, 284305, 292428, 324920, 341166, 365535, 389904, 454888, 487380, 511749, 568610, 584856, 649840, 682332, 731070, 779808, 852915, 909776, 974760, 1023498, 1137220, 1169712, 1299680, 1364664, 1462140, 1705830, 1819552, 1949520, 2046996, 2274440, 2339424, 2558745, 2729328, 2924280, 3411660, 3899040, 4093992, 4548880, 5117490, 5458656, 5848560, 6823320, 8187984, 9097760, 10234980, 11697120, 13646640, 16375968, 20469960, 27293280, 40939920, 81879840]

約数ペア:

[(1, 81879840), (2, 40939920), (3, 27293280), (4, 20469960), (5, 16375968), (6, 13646640), (7, 11697120), (8, 10234980), (9, 9097760), (10, 8187984), (12, 6823320), (14, 5848560), (15, 5458656), (16, 5117490), (18, 4548880), (20, 4093992), (21, 3899040), (24, 3411660), (28, 2924280), (30, 2729328), (32, 2558745), (35, 2339424), (36, 2274440), (40, 2046996), (42, 1949520), (45, 1819552), (48, 1705830), (56, 1462140), (60, 1364664), (63, 1299680), (70, 1169712), (72, 1137220), (80, 1023498), (84, 974760), (90, 909776), (96, 852915), (105, 779808), (112, 731070), (120, 682332), (126, 649840), (140, 584856), (144, 568610), (160, 511749), (168, 487380), (180, 454888), (210, 389904), (224, 365535), (240, 341166), (252, 324920), (280, 292428), (288, 284305), (315, 259936), (336, 243690), (360, 227444), (420, 194952), (480, 170583), (504, 162460), (560, 146214), (630, 129968), (672, 121845), (720, 113722), (840, 97476), (1008, 81230), (1120, 73107), (1260, 64984), (1440, 56861), (1680, 48738), (2016, 40615), (2520, 32492), (3360, 24369), (5040, 16246), (8123, 10080)]