21000884805

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6091}}^1\times {\mathrm{4507}}^1$

素因数の和:10626

約数の個数: 48

約数和(自身を含む): 38557681344

約数和(自身を除く): 17556796539

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 4507, 6091, 13521, 18273, 22535, 30455, 40563, 54819, 67605, 76619, 91365, 103547, 202815, 229857, 274095, 310641, 383095, 517735, 689571, 931923, 1149285, 1553205, 3447855, 4659615, 27452137, 82356411, 137260685, 247069233, 411782055, 466686329, 1235346165, 1400058987, 2333431645, 4200176961, 7000294935, 21000884805]

約数ペア:

[(1, 21000884805), (3, 7000294935), (5, 4200176961), (9, 2333431645), (15, 1400058987), (17, 1235346165), (45, 466686329), (51, 411782055), (85, 247069233), (153, 137260685), (255, 82356411), (765, 27452137), (4507, 4659615), (6091, 3447855), (13521, 1553205), (18273, 1149285), (22535, 931923), (30455, 689571), (40563, 517735), (54819, 383095), (67605, 310641), (76619, 274095), (91365, 229857), (103547, 202815)]