428260040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{857}}^1$

素因数の和:943

約数の個数: 96

約数和(自身を含む): 1073512440

約数和(自身を除く): 645252400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 857, 961, 1240, 1612, 1714, 1922, 2015, 3224, 3428, 3844, 4030, 4285, 4805, 6856, 7688, 8060, 8570, 9610, 11141, 12493, 16120, 17140, 19220, 22282, 24986, 26567, 34280, 38440, 44564, 49972, 53134, 55705, 62465, 89128, 99944, 106268, 111410, 124930, 132835, 212536, 222820, 249860, 265670, 345371, 445640, 499720, 531340, 690742, 823577, 1062680, 1381484, 1647154, 1726855, 2762968, 3294308, 3453710, 4117885, 6588616, 6907420, 8235770, 10706501, 13814840, 16471540, 21413002, 32943080, 42826004, 53532505, 85652008, 107065010, 214130020, 428260040]

約数ペア:

[(1, 428260040), (2, 214130020), (4, 107065010), (5, 85652008), (8, 53532505), (10, 42826004), (13, 32943080), (20, 21413002), (26, 16471540), (31, 13814840), (40, 10706501), (52, 8235770), (62, 6907420), (65, 6588616), (104, 4117885), (124, 3453710), (130, 3294308), (155, 2762968), (248, 1726855), (260, 1647154), (310, 1381484), (403, 1062680), (520, 823577), (620, 690742), (806, 531340), (857, 499720), (961, 445640), (1240, 345371), (1612, 265670), (1714, 249860), (1922, 222820), (2015, 212536), (3224, 132835), (3428, 124930), (3844, 111410), (4030, 106268), (4285, 99944), (4805, 89128), (6856, 62465), (7688, 55705), (8060, 53134), (8570, 49972), (9610, 44564), (11141, 38440), (12493, 34280), (16120, 26567), (17140, 24986), (19220, 22282)]