28708485

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 53319168

約数和(自身を除く): 24610683

約数列:

[1, 3, 5, 13, 15, 23, 37, 39, 65, 69, 111, 115, 173, 185, 195, 299, 345, 481, 519, 555, 851, 865, 897, 1443, 1495, 2249, 2405, 2553, 2595, 3979, 4255, 4485, 6401, 6747, 7215, 11063, 11245, 11937, 12765, 19203, 19895, 32005, 33189, 33735, 51727, 55315, 59685, 83213, 96015, 147223, 155181, 165945, 249639, 258635, 416065, 441669, 736115, 775905, 1248195, 1913899, 2208345, 5741697, 9569495, 28708485]

約数ペア:

[(1, 28708485), (3, 9569495), (5, 5741697), (13, 2208345), (15, 1913899), (23, 1248195), (37, 775905), (39, 736115), (65, 441669), (69, 416065), (111, 258635), (115, 249639), (173, 165945), (185, 155181), (195, 147223), (299, 96015), (345, 83213), (481, 59685), (519, 55315), (555, 51727), (851, 33735), (865, 33189), (897, 32005), (1443, 19895), (1495, 19203), (2249, 12765), (2405, 11937), (2553, 11245), (2595, 11063), (3979, 7215), (4255, 6747), (4485, 6401)]