20874165

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{641}}^1$

素因数の和:829

約数の個数: 32

約数和(自身を含む): 36239616

約数和(自身を除く): 15365451

約数列:

[1, 3, 5, 13, 15, 39, 65, 167, 195, 501, 641, 835, 1923, 2171, 2505, 3205, 6513, 8333, 9615, 10855, 24999, 32565, 41665, 107047, 124995, 321141, 535235, 1391611, 1605705, 4174833, 6958055, 20874165]

約数ペア:

[(1, 20874165), (3, 6958055), (5, 4174833), (13, 1605705), (15, 1391611), (39, 535235), (65, 321141), (167, 124995), (195, 107047), (501, 41665), (641, 32565), (835, 24999), (1923, 10855), (2171, 9615), (2505, 8333), (3205, 6513)]