209680640

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12601}}^1$

素因数の和:12635

約数の個数: 72

約数和(自身を含む): 540928248

約数和(自身を除く): 331247608

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 8320, 12601, 16640, 25202, 50404, 63005, 100808, 126010, 163813, 201616, 252020, 327626, 403232, 504040, 655252, 806464, 819065, 1008080, 1310504, 1612928, 1638130, 2016160, 2621008, 3225856, 3276260, 4032320, 5242016, 6552520, 8064640, 10484032, 13105040, 16129280, 20968064, 26210080, 41936128, 52420160, 104840320, 209680640]

約数ペア:

[(1, 209680640), (2, 104840320), (4, 52420160), (5, 41936128), (8, 26210080), (10, 20968064), (13, 16129280), (16, 13105040), (20, 10484032), (26, 8064640), (32, 6552520), (40, 5242016), (52, 4032320), (64, 3276260), (65, 3225856), (80, 2621008), (104, 2016160), (128, 1638130), (130, 1612928), (160, 1310504), (208, 1008080), (256, 819065), (260, 806464), (320, 655252), (416, 504040), (520, 403232), (640, 327626), (832, 252020), (1040, 201616), (1280, 163813), (1664, 126010), (2080, 100808), (3328, 63005), (4160, 50404), (8320, 25202), (12601, 16640)]