84260020

素因数分解:

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

素因数の和:389

約数の個数: 72

約数和(自身を含む): 194332824

約数和(自身を除く): 110072804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 97, 130, 169, 194, 257, 260, 338, 388, 485, 514, 676, 845, 970, 1028, 1261, 1285, 1690, 1940, 2522, 2570, 3341, 3380, 5044, 5140, 6305, 6682, 12610, 13364, 16393, 16705, 24929, 25220, 32786, 33410, 43433, 49858, 65572, 66820, 81965, 86866, 99716, 124645, 163930, 173732, 217165, 249290, 324077, 327860, 434330, 498580, 648154, 868660, 1296308, 1620385, 3240770, 4213001, 6481540, 8426002, 16852004, 21065005, 42130010, 84260020]

約数ペア:

[(1, 84260020), (2, 42130010), (4, 21065005), (5, 16852004), (10, 8426002), (13, 6481540), (20, 4213001), (26, 3240770), (52, 1620385), (65, 1296308), (97, 868660), (130, 648154), (169, 498580), (194, 434330), (257, 327860), (260, 324077), (338, 249290), (388, 217165), (485, 173732), (514, 163930), (676, 124645), (845, 99716), (970, 86866), (1028, 81965), (1261, 66820), (1285, 65572), (1690, 49858), (1940, 43433), (2522, 33410), (2570, 32786), (3341, 25220), (3380, 24929), (5044, 16705), (5140, 16393), (6305, 13364), (6682, 12610)]