256726680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{43661}}^1$

素因数の和:43689

約数の個数: 96

約数和(自身を含む): 895944240

約数和(自身を除く): 639217560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 5880, 43661, 87322, 130983, 174644, 218305, 261966, 305627, 349288, 436610, 523932, 611254, 654915, 873220, 916881, 1047864, 1222508, 1309830, 1528135, 1746440, 1833762, 2139389, 2445016, 2619660, 3056270, 3667524, 4278778, 4584405, 5239320, 6112540, 6418167, 7335048, 8557556, 9168810, 10696945, 12225080, 12836334, 17115112, 18337620, 21393890, 25672668, 32090835, 36675240, 42787780, 51345336, 64181670, 85575560, 128363340, 256726680]

約数ペア:

[(1, 256726680), (2, 128363340), (3, 85575560), (4, 64181670), (5, 51345336), (6, 42787780), (7, 36675240), (8, 32090835), (10, 25672668), (12, 21393890), (14, 18337620), (15, 17115112), (20, 12836334), (21, 12225080), (24, 10696945), (28, 9168810), (30, 8557556), (35, 7335048), (40, 6418167), (42, 6112540), (49, 5239320), (56, 4584405), (60, 4278778), (70, 3667524), (84, 3056270), (98, 2619660), (105, 2445016), (120, 2139389), (140, 1833762), (147, 1746440), (168, 1528135), (196, 1309830), (210, 1222508), (245, 1047864), (280, 916881), (294, 873220), (392, 654915), (420, 611254), (490, 523932), (588, 436610), (735, 349288), (840, 305627), (980, 261966), (1176, 218305), (1470, 174644), (1960, 130983), (2940, 87322), (5880, 43661)]