266721520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{8273}}^1$

素因数の和:8330

約数の個数: 80

約数和(自身を含む): 689455872

約数和(自身を除く): 422734352

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 8060, 8273, 16120, 16546, 32240, 33092, 41365, 66184, 82730, 107549, 132368, 165460, 215098, 256463, 330920, 430196, 512926, 537745, 661840, 860392, 1025852, 1075490, 1282315, 1720784, 2051704, 2150980, 2564630, 3334019, 4103408, 4301960, 5129260, 6668038, 8603920, 10258520, 13336076, 16670095, 20517040, 26672152, 33340190, 53344304, 66680380, 133360760, 266721520]

約数ペア:

[(1, 266721520), (2, 133360760), (4, 66680380), (5, 53344304), (8, 33340190), (10, 26672152), (13, 20517040), (16, 16670095), (20, 13336076), (26, 10258520), (31, 8603920), (40, 6668038), (52, 5129260), (62, 4301960), (65, 4103408), (80, 3334019), (104, 2564630), (124, 2150980), (130, 2051704), (155, 1720784), (208, 1282315), (248, 1075490), (260, 1025852), (310, 860392), (403, 661840), (496, 537745), (520, 512926), (620, 430196), (806, 330920), (1040, 256463), (1240, 215098), (1612, 165460), (2015, 132368), (2480, 107549), (3224, 82730), (4030, 66184), (6448, 41365), (8060, 33092), (8273, 32240), (16120, 16546)]