13438415

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 18429120

約数和(自身を除く): 4990705

約数列:

[1, 5, 17, 19, 53, 85, 95, 157, 265, 323, 785, 901, 1007, 1615, 2669, 2983, 4505, 5035, 8321, 13345, 14915, 17119, 41605, 50711, 85595, 141457, 158099, 253555, 707285, 790495, 2687683, 13438415]

約数ペア:

[(1, 13438415), (5, 2687683), (17, 790495), (19, 707285), (53, 253555), (85, 158099), (95, 141457), (157, 85595), (265, 50711), (323, 41605), (785, 17119), (901, 14915), (1007, 13345), (1615, 8321), (2669, 5035), (2983, 4505)]