78816920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{367}}^1$

素因数の和:457

約数の個数: 128

約数和(自身を含む): 222566400

約数和(自身を除く): 143749480

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 59, 65, 70, 91, 104, 118, 130, 140, 182, 236, 260, 280, 295, 364, 367, 413, 455, 472, 520, 590, 728, 734, 767, 826, 910, 1180, 1468, 1534, 1652, 1820, 1835, 2065, 2360, 2569, 2936, 3068, 3304, 3640, 3670, 3835, 4130, 4771, 5138, 5369, 6136, 7340, 7670, 8260, 9542, 10276, 10738, 12845, 14680, 15340, 16520, 19084, 20552, 21476, 21653, 23855, 25690, 26845, 30680, 33397, 38168, 42952, 43306, 47710, 51380, 53690, 66794, 86612, 95420, 102760, 107380, 108265, 133588, 151571, 166985, 173224, 190840, 214760, 216530, 267176, 281489, 303142, 333970, 433060, 562978, 606284, 667940, 757855, 866120, 1125956, 1212568, 1335880, 1407445, 1515710, 1970423, 2251912, 2814890, 3031420, 3940846, 5629780, 6062840, 7881692, 9852115, 11259560, 15763384, 19704230, 39408460, 78816920]

約数ペア:

[(1, 78816920), (2, 39408460), (4, 19704230), (5, 15763384), (7, 11259560), (8, 9852115), (10, 7881692), (13, 6062840), (14, 5629780), (20, 3940846), (26, 3031420), (28, 2814890), (35, 2251912), (40, 1970423), (52, 1515710), (56, 1407445), (59, 1335880), (65, 1212568), (70, 1125956), (91, 866120), (104, 757855), (118, 667940), (130, 606284), (140, 562978), (182, 433060), (236, 333970), (260, 303142), (280, 281489), (295, 267176), (364, 216530), (367, 214760), (413, 190840), (455, 173224), (472, 166985), (520, 151571), (590, 133588), (728, 108265), (734, 107380), (767, 102760), (826, 95420), (910, 86612), (1180, 66794), (1468, 53690), (1534, 51380), (1652, 47710), (1820, 43306), (1835, 42952), (2065, 38168), (2360, 33397), (2569, 30680), (2936, 26845), (3068, 25690), (3304, 23855), (3640, 21653), (3670, 21476), (3835, 20552), (4130, 19084), (4771, 16520), (5138, 15340), (5369, 14680), (6136, 12845), (7340, 10738), (7670, 10276), (8260, 9542)]