20731653

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1$

素因数の和:135

約数の個数: 48

約数和(自身を含む): 34318080

約数和(自身を除く): 13586427

約数列:

[1, 3, 9, 17, 27, 31, 47, 51, 93, 141, 153, 279, 423, 459, 527, 799, 837, 961, 1269, 1457, 1581, 2397, 2883, 4371, 4743, 7191, 8649, 13113, 14229, 16337, 21573, 24769, 25947, 39339, 45167, 49011, 74307, 135501, 147033, 222921, 406503, 441099, 668763, 767839, 1219509, 2303517, 6910551, 20731653]

約数ペア:

[(1, 20731653), (3, 6910551), (9, 2303517), (17, 1219509), (27, 767839), (31, 668763), (47, 441099), (51, 406503), (93, 222921), (141, 147033), (153, 135501), (279, 74307), (423, 49011), (459, 45167), (527, 39339), (799, 25947), (837, 24769), (961, 21573), (1269, 16337), (1457, 14229), (1581, 13113), (2397, 8649), (2883, 7191), (4371, 4743)]