81019250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 165660768

約数和(自身を除く): 84641518

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 97, 125, 130, 194, 250, 257, 325, 485, 514, 650, 970, 1261, 1285, 1625, 2425, 2522, 2570, 3250, 3341, 4850, 6305, 6425, 6682, 12125, 12610, 12850, 16705, 24250, 24929, 31525, 32125, 33410, 49858, 63050, 64250, 83525, 124645, 157625, 167050, 249290, 315250, 324077, 417625, 623225, 648154, 835250, 1246450, 1620385, 3116125, 3240770, 6232250, 8101925, 16203850, 40509625, 81019250]

約数ペア:

[(1, 81019250), (2, 40509625), (5, 16203850), (10, 8101925), (13, 6232250), (25, 3240770), (26, 3116125), (50, 1620385), (65, 1246450), (97, 835250), (125, 648154), (130, 623225), (194, 417625), (250, 324077), (257, 315250), (325, 249290), (485, 167050), (514, 157625), (650, 124645), (970, 83525), (1261, 64250), (1285, 63050), (1625, 49858), (2425, 33410), (2522, 32125), (2570, 31525), (3250, 24929), (3341, 24250), (4850, 16705), (6305, 12850), (6425, 12610), (6682, 12125)]