398008

素因数分解:

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

素因数の和:151

約数の個数: 32

約数和(自身を含む): 831600

約数和(自身を除く): 433592

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 89, 104, 172, 178, 344, 356, 559, 712, 1118, 1157, 2236, 2314, 3827, 4472, 4628, 7654, 9256, 15308, 30616, 49751, 99502, 199004, 398008]

約数ペア:

[(1, 398008), (2, 199004), (4, 99502), (8, 49751), (13, 30616), (26, 15308), (43, 9256), (52, 7654), (86, 4628), (89, 4472), (104, 3827), (172, 2314), (178, 2236), (344, 1157), (356, 1118), (559, 712)]