251720560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:591

約数の個数: 160

約数和(自身を含む): 731953152

約数和(自身を除く): 480232592

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 71, 80, 91, 104, 112, 130, 140, 142, 182, 208, 260, 280, 284, 355, 364, 455, 487, 497, 520, 560, 568, 710, 728, 910, 923, 974, 994, 1040, 1136, 1420, 1456, 1820, 1846, 1948, 1988, 2435, 2485, 2840, 3409, 3640, 3692, 3896, 3976, 4615, 4870, 4970, 5680, 6331, 6461, 6818, 7280, 7384, 7792, 7952, 9230, 9740, 9940, 12662, 12922, 13636, 14768, 17045, 18460, 19480, 19880, 25324, 25844, 27272, 31655, 32305, 34090, 34577, 36920, 38960, 39760, 44317, 50648, 51688, 54544, 63310, 64610, 68180, 69154, 73840, 88634, 101296, 103376, 126620, 129220, 136360, 138308, 172885, 177268, 221585, 242039, 253240, 258440, 272720, 276616, 345770, 354536, 443170, 449501, 484078, 506480, 516880, 553232, 691540, 709072, 886340, 899002, 968156, 1210195, 1383080, 1772680, 1798004, 1936312, 2247505, 2420390, 2766160, 3146507, 3545360, 3596008, 3872624, 4495010, 4840780, 6293014, 7192016, 8990020, 9681560, 12586028, 15732535, 17980040, 19363120, 25172056, 31465070, 35960080, 50344112, 62930140, 125860280, 251720560]

約数ペア:

[(1, 251720560), (2, 125860280), (4, 62930140), (5, 50344112), (7, 35960080), (8, 31465070), (10, 25172056), (13, 19363120), (14, 17980040), (16, 15732535), (20, 12586028), (26, 9681560), (28, 8990020), (35, 7192016), (40, 6293014), (52, 4840780), (56, 4495010), (65, 3872624), (70, 3596008), (71, 3545360), (80, 3146507), (91, 2766160), (104, 2420390), (112, 2247505), (130, 1936312), (140, 1798004), (142, 1772680), (182, 1383080), (208, 1210195), (260, 968156), (280, 899002), (284, 886340), (355, 709072), (364, 691540), (455, 553232), (487, 516880), (497, 506480), (520, 484078), (560, 449501), (568, 443170), (710, 354536), (728, 345770), (910, 276616), (923, 272720), (974, 258440), (994, 253240), (1040, 242039), (1136, 221585), (1420, 177268), (1456, 172885), (1820, 138308), (1846, 136360), (1948, 129220), (1988, 126620), (2435, 103376), (2485, 101296), (2840, 88634), (3409, 73840), (3640, 69154), (3692, 68180), (3896, 64610), (3976, 63310), (4615, 54544), (4870, 51688), (4970, 50648), (5680, 44317), (6331, 39760), (6461, 38960), (6818, 36920), (7280, 34577), (7384, 34090), (7792, 32305), (7952, 31655), (9230, 27272), (9740, 25844), (9940, 25324), (12662, 19880), (12922, 19480), (13636, 18460), (14768, 17045)]