257519500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{23}}^1\times {\mathrm{457}}^1$

素因数の和:513

約数の個数: 144

約数和(自身を含む): 684186048

約数和(自身を除く): 426666548

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 46, 49, 50, 70, 92, 98, 100, 115, 125, 140, 161, 175, 196, 230, 245, 250, 322, 350, 457, 460, 490, 500, 575, 644, 700, 805, 875, 914, 980, 1127, 1150, 1225, 1610, 1750, 1828, 2254, 2285, 2300, 2450, 2875, 3199, 3220, 3500, 4025, 4508, 4570, 4900, 5635, 5750, 6125, 6398, 8050, 9140, 10511, 11270, 11425, 11500, 12250, 12796, 15995, 16100, 20125, 21022, 22393, 22540, 22850, 24500, 28175, 31990, 40250, 42044, 44786, 45700, 52555, 56350, 57125, 63980, 73577, 79975, 80500, 89572, 105110, 111965, 112700, 114250, 140875, 147154, 159950, 210220, 223930, 228500, 262775, 281750, 294308, 319900, 367885, 399875, 447860, 515039, 525550, 559825, 563500, 735770, 799750, 1030078, 1051100, 1119650, 1313875, 1471540, 1599500, 1839425, 2060156, 2239300, 2575195, 2627750, 2799125, 3678850, 5150390, 5255500, 5598250, 7357700, 9197125, 10300780, 11196500, 12875975, 18394250, 25751950, 36788500, 51503900, 64379875, 128759750, 257519500]

約数ペア:

[(1, 257519500), (2, 128759750), (4, 64379875), (5, 51503900), (7, 36788500), (10, 25751950), (14, 18394250), (20, 12875975), (23, 11196500), (25, 10300780), (28, 9197125), (35, 7357700), (46, 5598250), (49, 5255500), (50, 5150390), (70, 3678850), (92, 2799125), (98, 2627750), (100, 2575195), (115, 2239300), (125, 2060156), (140, 1839425), (161, 1599500), (175, 1471540), (196, 1313875), (230, 1119650), (245, 1051100), (250, 1030078), (322, 799750), (350, 735770), (457, 563500), (460, 559825), (490, 525550), (500, 515039), (575, 447860), (644, 399875), (700, 367885), (805, 319900), (875, 294308), (914, 281750), (980, 262775), (1127, 228500), (1150, 223930), (1225, 210220), (1610, 159950), (1750, 147154), (1828, 140875), (2254, 114250), (2285, 112700), (2300, 111965), (2450, 105110), (2875, 89572), (3199, 80500), (3220, 79975), (3500, 73577), (4025, 63980), (4508, 57125), (4570, 56350), (4900, 52555), (5635, 45700), (5750, 44786), (6125, 42044), (6398, 40250), (8050, 31990), (9140, 28175), (10511, 24500), (11270, 22850), (11425, 22540), (11500, 22393), (12250, 21022), (12796, 20125), (15995, 16100)]