81589520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{197}}^1$

素因数の和:408

約数の個数: 80

約数和(自身を含む): 197987328

約数和(自身を除く): 116397808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 167, 197, 248, 310, 334, 394, 496, 620, 668, 788, 835, 985, 1240, 1336, 1576, 1670, 1970, 2480, 2672, 3152, 3340, 3940, 5177, 6107, 6680, 7880, 10354, 12214, 13360, 15760, 20708, 24428, 25885, 30535, 32899, 41416, 48856, 51770, 61070, 65798, 82832, 97712, 103540, 122140, 131596, 164495, 207080, 244280, 263192, 328990, 414160, 488560, 526384, 657980, 1019869, 1315960, 2039738, 2631920, 4079476, 5099345, 8158952, 10198690, 16317904, 20397380, 40794760, 81589520]

約数ペア:

[(1, 81589520), (2, 40794760), (4, 20397380), (5, 16317904), (8, 10198690), (10, 8158952), (16, 5099345), (20, 4079476), (31, 2631920), (40, 2039738), (62, 1315960), (80, 1019869), (124, 657980), (155, 526384), (167, 488560), (197, 414160), (248, 328990), (310, 263192), (334, 244280), (394, 207080), (496, 164495), (620, 131596), (668, 122140), (788, 103540), (835, 97712), (985, 82832), (1240, 65798), (1336, 61070), (1576, 51770), (1670, 48856), (1970, 41416), (2480, 32899), (2672, 30535), (3152, 25885), (3340, 24428), (3940, 20708), (5177, 15760), (6107, 13360), (6680, 12214), (7880, 10354)]