28258568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 59875200

約数和(自身を除く): 31616632

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 71, 86, 89, 104, 142, 172, 178, 284, 344, 356, 559, 568, 712, 923, 1118, 1157, 1846, 2236, 2314, 3053, 3692, 3827, 4472, 4628, 6106, 6319, 7384, 7654, 9256, 12212, 12638, 15308, 24424, 25276, 30616, 39689, 49751, 50552, 79378, 82147, 99502, 158756, 164294, 199004, 271717, 317512, 328588, 398008, 543434, 657176, 1086868, 2173736, 3532321, 7064642, 14129284, 28258568]

約数ペア:

[(1, 28258568), (2, 14129284), (4, 7064642), (8, 3532321), (13, 2173736), (26, 1086868), (43, 657176), (52, 543434), (71, 398008), (86, 328588), (89, 317512), (104, 271717), (142, 199004), (172, 164294), (178, 158756), (284, 99502), (344, 82147), (356, 79378), (559, 50552), (568, 49751), (712, 39689), (923, 30616), (1118, 25276), (1157, 24424), (1846, 15308), (2236, 12638), (2314, 12212), (3053, 9256), (3692, 7654), (3827, 7384), (4472, 6319), (4628, 6106)]