80919680

素因数分解:

$2^7\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2143}}^1$

素因数の和:2221

約数の個数: 64

約数和(自身を含む): 196819200

約数和(自身を除く): 115899520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 128, 160, 236, 295, 320, 472, 590, 640, 944, 1180, 1888, 2143, 2360, 3776, 4286, 4720, 7552, 8572, 9440, 10715, 17144, 18880, 21430, 34288, 37760, 42860, 68576, 85720, 126437, 137152, 171440, 252874, 274304, 342880, 505748, 632185, 685760, 1011496, 1264370, 1371520, 2022992, 2528740, 4045984, 5057480, 8091968, 10114960, 16183936, 20229920, 40459840, 80919680]

約数ペア:

[(1, 80919680), (2, 40459840), (4, 20229920), (5, 16183936), (8, 10114960), (10, 8091968), (16, 5057480), (20, 4045984), (32, 2528740), (40, 2022992), (59, 1371520), (64, 1264370), (80, 1011496), (118, 685760), (128, 632185), (160, 505748), (236, 342880), (295, 274304), (320, 252874), (472, 171440), (590, 137152), (640, 126437), (944, 85720), (1180, 68576), (1888, 42860), (2143, 37760), (2360, 34288), (3776, 21430), (4286, 18880), (4720, 17144), (7552, 10715), (8572, 9440)]