18511765816

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{55333}}^1$

素因数の和:55460

約数の個数: 64

約数和(自身を含む): 38246860800

約数和(自身を除く): 19735094984

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 71, 76, 124, 142, 152, 248, 284, 568, 589, 1178, 1349, 2201, 2356, 2698, 4402, 4712, 5396, 8804, 10792, 17608, 41819, 55333, 83638, 110666, 167276, 221332, 334552, 442664, 1051327, 1715323, 2102654, 3430646, 3928643, 4205308, 6861292, 7857286, 8410616, 13722584, 15714572, 31429144, 32591137, 65182274, 74644217, 121787933, 130364548, 149288434, 243575866, 260729096, 298576868, 487151732, 597153736, 974303464, 2313970727, 4627941454, 9255882908, 18511765816]

約数ペア:

[(1, 18511765816), (2, 9255882908), (4, 4627941454), (8, 2313970727), (19, 974303464), (31, 597153736), (38, 487151732), (62, 298576868), (71, 260729096), (76, 243575866), (124, 149288434), (142, 130364548), (152, 121787933), (248, 74644217), (284, 65182274), (568, 32591137), (589, 31429144), (1178, 15714572), (1349, 13722584), (2201, 8410616), (2356, 7857286), (2698, 6861292), (4402, 4205308), (4712, 3928643), (5396, 3430646), (8804, 2102654), (10792, 1715323), (17608, 1051327), (41819, 442664), (55333, 334552), (83638, 221332), (110666, 167276)]