21087750840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{21023}}^1$

素因数の和:21693

約数の個数: 128

約数和(自身を含む): 68238858240

約数和(自身を除く): 47151107400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 643, 780, 1286, 1560, 1929, 2572, 3215, 3858, 5144, 6430, 7716, 8359, 9645, 12860, 15432, 16718, 19290, 21023, 25077, 25720, 33436, 38580, 41795, 42046, 50154, 63069, 66872, 77160, 83590, 84092, 100308, 105115, 125385, 126138, 167180, 168184, 200616, 210230, 250770, 252276, 273299, 315345, 334360, 420460, 501540, 504552, 546598, 630690, 819897, 840920, 1003080, 1093196, 1261380, 1366495, 1639794, 2186392, 2522760, 2732990, 3279588, 4099485, 5465980, 6559176, 8198970, 10931960, 13517789, 16397940, 27035578, 32795880, 40553367, 54071156, 67588945, 81106734, 108142312, 135177890, 162213468, 175731257, 202766835, 270355780, 324426936, 351462514, 405533670, 527193771, 540711560, 702925028, 811067340, 878656285, 1054387542, 1405850056, 1622134680, 1757312570, 2108775084, 2635968855, 3514625140, 4217550168, 5271937710, 7029250280, 10543875420, 21087750840]

約数ペア:

[(1, 21087750840), (2, 10543875420), (3, 7029250280), (4, 5271937710), (5, 4217550168), (6, 3514625140), (8, 2635968855), (10, 2108775084), (12, 1757312570), (13, 1622134680), (15, 1405850056), (20, 1054387542), (24, 878656285), (26, 811067340), (30, 702925028), (39, 540711560), (40, 527193771), (52, 405533670), (60, 351462514), (65, 324426936), (78, 270355780), (104, 202766835), (120, 175731257), (130, 162213468), (156, 135177890), (195, 108142312), (260, 81106734), (312, 67588945), (390, 54071156), (520, 40553367), (643, 32795880), (780, 27035578), (1286, 16397940), (1560, 13517789), (1929, 10931960), (2572, 8198970), (3215, 6559176), (3858, 5465980), (5144, 4099485), (6430, 3279588), (7716, 2732990), (8359, 2522760), (9645, 2186392), (12860, 1639794), (15432, 1366495), (16718, 1261380), (19290, 1093196), (21023, 1003080), (25077, 840920), (25720, 819897), (33436, 630690), (38580, 546598), (41795, 504552), (42046, 501540), (50154, 420460), (63069, 334360), (66872, 315345), (77160, 273299), (83590, 252276), (84092, 250770), (100308, 210230), (105115, 200616), (125385, 168184), (126138, 167180)]