20851236160

素因数分解:

$2^6\times 5^1\times {\mathrm{67}}^1\times {\mathrm{487}}^1\times {\mathrm{1997}}^1$

素因数の和:2568

約数の個数: 112

約数和(自身を含む): 50521843584

約数和(自身を除く): 29670607424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 134, 160, 268, 320, 335, 487, 536, 670, 974, 1072, 1340, 1948, 1997, 2144, 2435, 2680, 3896, 3994, 4288, 4870, 5360, 7792, 7988, 9740, 9985, 10720, 15584, 15976, 19480, 19970, 21440, 31168, 31952, 32629, 38960, 39940, 63904, 65258, 77920, 79880, 127808, 130516, 133799, 155840, 159760, 163145, 261032, 267598, 319520, 326290, 522064, 535196, 639040, 652580, 668995, 972539, 1044128, 1070392, 1305160, 1337990, 1945078, 2088256, 2140784, 2610320, 2675980, 3890156, 4281568, 4862695, 5220640, 5351960, 7780312, 8563136, 9725390, 10441280, 10703920, 15560624, 19450780, 21407840, 31121248, 38901560, 42815680, 62242496, 65160113, 77803120, 130320226, 155606240, 260640452, 311212480, 325800565, 521280904, 651601130, 1042561808, 1303202260, 2085123616, 2606404520, 4170247232, 5212809040, 10425618080, 20851236160]

約数ペア:

[(1, 20851236160), (2, 10425618080), (4, 5212809040), (5, 4170247232), (8, 2606404520), (10, 2085123616), (16, 1303202260), (20, 1042561808), (32, 651601130), (40, 521280904), (64, 325800565), (67, 311212480), (80, 260640452), (134, 155606240), (160, 130320226), (268, 77803120), (320, 65160113), (335, 62242496), (487, 42815680), (536, 38901560), (670, 31121248), (974, 21407840), (1072, 19450780), (1340, 15560624), (1948, 10703920), (1997, 10441280), (2144, 9725390), (2435, 8563136), (2680, 7780312), (3896, 5351960), (3994, 5220640), (4288, 4862695), (4870, 4281568), (5360, 3890156), (7792, 2675980), (7988, 2610320), (9740, 2140784), (9985, 2088256), (10720, 1945078), (15584, 1337990), (15976, 1305160), (19480, 1070392), (19970, 1044128), (21440, 972539), (31168, 668995), (31952, 652580), (32629, 639040), (38960, 535196), (39940, 522064), (63904, 326290), (65258, 319520), (77920, 267598), (79880, 261032), (127808, 163145), (130516, 159760), (133799, 155840)]