64980500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^2\times {\mathrm{769}}^1$

素因数の和:814

約数の個数: 72

約数和(自身を含む): 153873720

約数和(自身を除く): 88893220

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 169, 250, 260, 325, 338, 500, 650, 676, 769, 845, 1300, 1538, 1625, 1690, 3076, 3250, 3380, 3845, 4225, 6500, 7690, 8450, 9997, 15380, 16900, 19225, 19994, 21125, 38450, 39988, 42250, 49985, 76900, 84500, 96125, 99970, 129961, 192250, 199940, 249925, 259922, 384500, 499850, 519844, 649805, 999700, 1249625, 1299610, 2499250, 2599220, 3249025, 4998500, 6498050, 12996100, 16245125, 32490250, 64980500]

約数ペア:

[(1, 64980500), (2, 32490250), (4, 16245125), (5, 12996100), (10, 6498050), (13, 4998500), (20, 3249025), (25, 2599220), (26, 2499250), (50, 1299610), (52, 1249625), (65, 999700), (100, 649805), (125, 519844), (130, 499850), (169, 384500), (250, 259922), (260, 249925), (325, 199940), (338, 192250), (500, 129961), (650, 99970), (676, 96125), (769, 84500), (845, 76900), (1300, 49985), (1538, 42250), (1625, 39988), (1690, 38450), (3076, 21125), (3250, 19994), (3380, 19225), (3845, 16900), (4225, 15380), (6500, 9997), (7690, 8450)]