21184545

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 35020800

約数和(自身を除く): 13836255

約数列:

[1, 3, 5, 15, 47, 141, 151, 199, 235, 453, 597, 705, 755, 995, 2265, 2985, 7097, 9353, 21291, 28059, 30049, 35485, 46765, 90147, 106455, 140295, 150245, 450735, 1412303, 4236909, 7061515, 21184545]

約数ペア:

[(1, 21184545), (3, 7061515), (5, 4236909), (15, 1412303), (47, 450735), (141, 150245), (151, 140295), (199, 106455), (235, 90147), (453, 46765), (597, 35485), (705, 30049), (755, 28059), (995, 21291), (2265, 9353), (2985, 7097)]