28155465

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 54996480

約数和(自身を除く): 26841015

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 61, 65, 117, 135, 183, 195, 263, 305, 351, 549, 585, 789, 793, 915, 1315, 1647, 1755, 2367, 2379, 2745, 3419, 3945, 3965, 7101, 7137, 8235, 10257, 11835, 11895, 16043, 17095, 21411, 30771, 35505, 35685, 48129, 51285, 80215, 92313, 107055, 144387, 153855, 208559, 240645, 433161, 461565, 625677, 721935, 1042795, 1877031, 2165805, 3128385, 5631093, 9385155, 28155465]

約数ペア:

[(1, 28155465), (3, 9385155), (5, 5631093), (9, 3128385), (13, 2165805), (15, 1877031), (27, 1042795), (39, 721935), (45, 625677), (61, 461565), (65, 433161), (117, 240645), (135, 208559), (183, 153855), (195, 144387), (263, 107055), (305, 92313), (351, 80215), (549, 51285), (585, 48129), (789, 35685), (793, 35505), (915, 30771), (1315, 21411), (1647, 17095), (1755, 16043), (2367, 11895), (2379, 11835), (2745, 10257), (3419, 8235), (3945, 7137), (3965, 7101)]