127537540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{389}}^1$

素因数の和:521

約数の個数: 72

約数和(自身を含む): 293758920

約数和(自身を除く): 166221380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 97, 130, 169, 194, 260, 338, 388, 389, 485, 676, 778, 845, 970, 1261, 1556, 1690, 1940, 1945, 2522, 3380, 3890, 5044, 5057, 6305, 7780, 10114, 12610, 16393, 20228, 25220, 25285, 32786, 37733, 50570, 65572, 65741, 75466, 81965, 101140, 131482, 150932, 163930, 188665, 262964, 327860, 328705, 377330, 490529, 657410, 754660, 981058, 1314820, 1962116, 2452645, 4905290, 6376877, 9810580, 12753754, 25507508, 31884385, 63768770, 127537540]

約数ペア:

[(1, 127537540), (2, 63768770), (4, 31884385), (5, 25507508), (10, 12753754), (13, 9810580), (20, 6376877), (26, 4905290), (52, 2452645), (65, 1962116), (97, 1314820), (130, 981058), (169, 754660), (194, 657410), (260, 490529), (338, 377330), (388, 328705), (389, 327860), (485, 262964), (676, 188665), (778, 163930), (845, 150932), (970, 131482), (1261, 101140), (1556, 81965), (1690, 75466), (1940, 65741), (1945, 65572), (2522, 50570), (3380, 37733), (3890, 32786), (5044, 25285), (5057, 25220), (6305, 20228), (7780, 16393), (10114, 12610)]