256606560

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{25457}}^1$

素因数の和:25485

約数の個数: 144

約数和(自身を含む): 1000804896

約数和(自身を除く): 744198336

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, 10080, 25457, 50914, 76371, 101828, 127285, 152742, 178199, 203656, 229113, 254570, 305484, 356398, 381855, 407312, 458226, 509140, 534597, 610968, 712796, 763710, 814624, 890995, 916452, 1018280, 1069194, 1145565, 1221936, 1425592, 1527420, 1603791, 1781990, 1832904, 2036560, 2138388, 2291130, 2443872, 2672985, 2851184, 3054840, 3207582, 3563980, 3665808, 4073120, 4276776, 4582260, 5345970, 5702368, 6109680, 6415164, 7127960, 7331616, 8018955, 8553552, 9164520, 10691940, 12219360, 12830328, 14255920, 16037910, 17107104, 18329040, 21383880, 25660656, 28511840, 32075820, 36658080, 42767760, 51321312, 64151640, 85535520, 128303280, 256606560]

約数ペア:

[(1, 256606560), (2, 128303280), (3, 85535520), (4, 64151640), (5, 51321312), (6, 42767760), (7, 36658080), (8, 32075820), (9, 28511840), (10, 25660656), (12, 21383880), (14, 18329040), (15, 17107104), (16, 16037910), (18, 14255920), (20, 12830328), (21, 12219360), (24, 10691940), (28, 9164520), (30, 8553552), (32, 8018955), (35, 7331616), (36, 7127960), (40, 6415164), (42, 6109680), (45, 5702368), (48, 5345970), (56, 4582260), (60, 4276776), (63, 4073120), (70, 3665808), (72, 3563980), (80, 3207582), (84, 3054840), (90, 2851184), (96, 2672985), (105, 2443872), (112, 2291130), (120, 2138388), (126, 2036560), (140, 1832904), (144, 1781990), (160, 1603791), (168, 1527420), (180, 1425592), (210, 1221936), (224, 1145565), (240, 1069194), (252, 1018280), (280, 916452), (288, 890995), (315, 814624), (336, 763710), (360, 712796), (420, 610968), (480, 534597), (504, 509140), (560, 458226), (630, 407312), (672, 381855), (720, 356398), (840, 305484), (1008, 254570), (1120, 229113), (1260, 203656), (1440, 178199), (1680, 152742), (2016, 127285), (2520, 101828), (3360, 76371), (5040, 50914), (10080, 25457)]