18444735

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 33965568

約数和(自身を除く): 15520833

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 71, 115, 207, 213, 251, 345, 355, 639, 753, 1035, 1065, 1255, 1633, 2259, 3195, 3765, 4899, 5773, 8165, 11295, 14697, 17319, 17821, 24495, 28865, 51957, 53463, 73485, 86595, 89105, 160389, 259785, 267315, 409883, 801945, 1229649, 2049415, 3688947, 6148245, 18444735]

約数ペア:

[(1, 18444735), (3, 6148245), (5, 3688947), (9, 2049415), (15, 1229649), (23, 801945), (45, 409883), (69, 267315), (71, 259785), (115, 160389), (207, 89105), (213, 86595), (251, 73485), (345, 53463), (355, 51957), (639, 28865), (753, 24495), (1035, 17821), (1065, 17319), (1255, 14697), (1633, 11295), (2259, 8165), (3195, 5773), (3765, 4899)]