21056145

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3449}}^1$

素因数の和:3505

約数の個数: 32

約数和(自身を含む): 37756800

約数和(自身を除く): 16700655

約数列:

[1, 3, 5, 11, 15, 33, 37, 55, 111, 165, 185, 407, 555, 1221, 2035, 3449, 6105, 10347, 17245, 37939, 51735, 113817, 127613, 189695, 382839, 569085, 638065, 1403743, 1914195, 4211229, 7018715, 21056145]

約数ペア:

[(1, 21056145), (3, 7018715), (5, 4211229), (11, 1914195), (15, 1403743), (33, 638065), (37, 569085), (55, 382839), (111, 189695), (165, 127613), (185, 113817), (407, 51735), (555, 37939), (1221, 17245), (2035, 10347), (3449, 6105)]