18489640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:123

約数の個数: 96

約数和(自身を含む): 47544840

約数和(自身を除く): 29055200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 37, 40, 52, 62, 65, 74, 104, 124, 130, 148, 155, 185, 248, 260, 296, 310, 370, 403, 481, 520, 620, 740, 806, 961, 962, 1147, 1240, 1480, 1612, 1922, 1924, 2015, 2294, 2405, 3224, 3844, 3848, 4030, 4588, 4805, 4810, 5735, 7688, 8060, 9176, 9610, 9620, 11470, 12493, 14911, 16120, 19220, 19240, 22940, 24986, 29822, 35557, 38440, 45880, 49972, 59644, 62465, 71114, 74555, 99944, 119288, 124930, 142228, 149110, 177785, 249860, 284456, 298220, 355570, 462241, 499720, 596440, 711140, 924482, 1422280, 1848964, 2311205, 3697928, 4622410, 9244820, 18489640]

約数ペア:

[(1, 18489640), (2, 9244820), (4, 4622410), (5, 3697928), (8, 2311205), (10, 1848964), (13, 1422280), (20, 924482), (26, 711140), (31, 596440), (37, 499720), (40, 462241), (52, 355570), (62, 298220), (65, 284456), (74, 249860), (104, 177785), (124, 149110), (130, 142228), (148, 124930), (155, 119288), (185, 99944), (248, 74555), (260, 71114), (296, 62465), (310, 59644), (370, 49972), (403, 45880), (481, 38440), (520, 35557), (620, 29822), (740, 24986), (806, 22940), (961, 19240), (962, 19220), (1147, 16120), (1240, 14911), (1480, 12493), (1612, 11470), (1922, 9620), (1924, 9610), (2015, 9176), (2294, 8060), (2405, 7688), (3224, 5735), (3844, 4810), (3848, 4805), (4030, 4588)]