256579680

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{10909}}^1$

素因数の和:10941

約数の個数: 144

約数和(自身を含む): 940267440

約数和(自身を除く): 683687760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 196, 210, 224, 240, 245, 280, 294, 336, 392, 420, 480, 490, 560, 588, 672, 735, 784, 840, 980, 1120, 1176, 1470, 1568, 1680, 1960, 2352, 2940, 3360, 3920, 4704, 5880, 7840, 10909, 11760, 21818, 23520, 32727, 43636, 54545, 65454, 76363, 87272, 109090, 130908, 152726, 163635, 174544, 218180, 229089, 261816, 305452, 327270, 349088, 381815, 436360, 458178, 523632, 534541, 610904, 654540, 763630, 872720, 916356, 1047264, 1069082, 1145445, 1221808, 1309080, 1527260, 1603623, 1745440, 1832712, 2138164, 2290890, 2443616, 2618160, 2672705, 3054520, 3207246, 3665424, 4276328, 4581780, 5236320, 5345410, 6109040, 6414492, 7330848, 8018115, 8552656, 9163560, 10690820, 12218080, 12828984, 16036230, 17105312, 18327120, 21381640, 25657968, 32072460, 36654240, 42763280, 51315936, 64144920, 85526560, 128289840, 256579680]

約数ペア:

[(1, 256579680), (2, 128289840), (3, 85526560), (4, 64144920), (5, 51315936), (6, 42763280), (7, 36654240), (8, 32072460), (10, 25657968), (12, 21381640), (14, 18327120), (15, 17105312), (16, 16036230), (20, 12828984), (21, 12218080), (24, 10690820), (28, 9163560), (30, 8552656), (32, 8018115), (35, 7330848), (40, 6414492), (42, 6109040), (48, 5345410), (49, 5236320), (56, 4581780), (60, 4276328), (70, 3665424), (80, 3207246), (84, 3054520), (96, 2672705), (98, 2618160), (105, 2443616), (112, 2290890), (120, 2138164), (140, 1832712), (147, 1745440), (160, 1603623), (168, 1527260), (196, 1309080), (210, 1221808), (224, 1145445), (240, 1069082), (245, 1047264), (280, 916356), (294, 872720), (336, 763630), (392, 654540), (420, 610904), (480, 534541), (490, 523632), (560, 458178), (588, 436360), (672, 381815), (735, 349088), (784, 327270), (840, 305452), (980, 261816), (1120, 229089), (1176, 218180), (1470, 174544), (1568, 163635), (1680, 152726), (1960, 130908), (2352, 109090), (2940, 87272), (3360, 76363), (3920, 65454), (4704, 54545), (5880, 43636), (7840, 32727), (10909, 23520), (11760, 21818)]