2718945

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 5121792

約数和(自身を除く): 2402847

約数列:

[1, 3, 5, 9, 15, 23, 37, 45, 69, 71, 111, 115, 185, 207, 213, 333, 345, 355, 555, 639, 851, 1035, 1065, 1633, 1665, 2553, 2627, 3195, 4255, 4899, 7659, 7881, 8165, 12765, 13135, 14697, 23643, 24495, 38295, 39405, 60421, 73485, 118215, 181263, 302105, 543789, 906315, 2718945]

約数ペア:

[(1, 2718945), (3, 906315), (5, 543789), (9, 302105), (15, 181263), (23, 118215), (37, 73485), (45, 60421), (69, 39405), (71, 38295), (111, 24495), (115, 23643), (185, 14697), (207, 13135), (213, 12765), (333, 8165), (345, 7881), (355, 7659), (555, 4899), (639, 4255), (851, 3195), (1035, 2627), (1065, 2553), (1633, 1665)]