18200455

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 28776384

約数和(自身を除く): 10575929

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 169, 181, 221, 455, 595, 845, 905, 1105, 1183, 1267, 1547, 2353, 2873, 3077, 5915, 6335, 7735, 11765, 14365, 15385, 16471, 20111, 21539, 30589, 40001, 82355, 100555, 107695, 152945, 200005, 214123, 280007, 520013, 1070615, 1400035, 2600065, 3640091, 18200455]

約数ペア:

[(1, 18200455), (5, 3640091), (7, 2600065), (13, 1400035), (17, 1070615), (35, 520013), (65, 280007), (85, 214123), (91, 200005), (119, 152945), (169, 107695), (181, 100555), (221, 82355), (455, 40001), (595, 30589), (845, 21539), (905, 20111), (1105, 16471), (1183, 15385), (1267, 14365), (1547, 11765), (2353, 7735), (2873, 6335), (3077, 5915)]