256339260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4409}}^1$

素因数の和:4460

約数の個数: 144

約数和(自身を含む): 866829600

約数和(自身を除く): 610490340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 19, 20, 30, 34, 36, 38, 45, 51, 57, 60, 68, 76, 85, 90, 95, 102, 114, 153, 170, 171, 180, 190, 204, 228, 255, 285, 306, 323, 340, 342, 380, 510, 570, 612, 646, 684, 765, 855, 969, 1020, 1140, 1292, 1530, 1615, 1710, 1938, 2907, 3060, 3230, 3420, 3876, 4409, 4845, 5814, 6460, 8818, 9690, 11628, 13227, 14535, 17636, 19380, 22045, 26454, 29070, 39681, 44090, 52908, 58140, 66135, 74953, 79362, 83771, 88180, 132270, 149906, 158724, 167542, 198405, 224859, 251313, 264540, 299812, 335084, 374765, 396810, 418855, 449718, 502626, 674577, 749530, 753939, 793620, 837710, 899436, 1005252, 1124295, 1256565, 1349154, 1424107, 1499060, 1507878, 1675420, 2248590, 2513130, 2698308, 2848214, 3015756, 3372885, 3769695, 4272321, 4497180, 5026260, 5696428, 6745770, 7120535, 7539390, 8544642, 12816963, 13491540, 14241070, 15078780, 17089284, 21361605, 25633926, 28482140, 42723210, 51267852, 64084815, 85446420, 128169630, 256339260]

約数ペア:

[(1, 256339260), (2, 128169630), (3, 85446420), (4, 64084815), (5, 51267852), (6, 42723210), (9, 28482140), (10, 25633926), (12, 21361605), (15, 17089284), (17, 15078780), (18, 14241070), (19, 13491540), (20, 12816963), (30, 8544642), (34, 7539390), (36, 7120535), (38, 6745770), (45, 5696428), (51, 5026260), (57, 4497180), (60, 4272321), (68, 3769695), (76, 3372885), (85, 3015756), (90, 2848214), (95, 2698308), (102, 2513130), (114, 2248590), (153, 1675420), (170, 1507878), (171, 1499060), (180, 1424107), (190, 1349154), (204, 1256565), (228, 1124295), (255, 1005252), (285, 899436), (306, 837710), (323, 793620), (340, 753939), (342, 749530), (380, 674577), (510, 502626), (570, 449718), (612, 418855), (646, 396810), (684, 374765), (765, 335084), (855, 299812), (969, 264540), (1020, 251313), (1140, 224859), (1292, 198405), (1530, 167542), (1615, 158724), (1710, 149906), (1938, 132270), (2907, 88180), (3060, 83771), (3230, 79362), (3420, 74953), (3876, 66135), (4409, 58140), (4845, 52908), (5814, 44090), (6460, 39681), (8818, 29070), (9690, 26454), (11628, 22045), (13227, 19380), (14535, 17636)]