25806879

素因数分解:

$3^2\times 7^2\times {\mathrm{139}}^1\times {\mathrm{421}}^1$

素因数の和:580

約数の個数: 36

約数和(自身を含む): 43778280

約数和(自身を除く): 17971401

約数列:

[1, 3, 7, 9, 21, 49, 63, 139, 147, 417, 421, 441, 973, 1251, 1263, 2919, 2947, 3789, 6811, 8757, 8841, 20433, 20629, 26523, 58519, 61299, 61887, 175557, 185661, 409633, 526671, 1228899, 2867431, 3686697, 8602293, 25806879]

約数ペア:

[(1, 25806879), (3, 8602293), (7, 3686697), (9, 2867431), (21, 1228899), (49, 526671), (63, 409633), (139, 185661), (147, 175557), (417, 61887), (421, 61299), (441, 58519), (973, 26523), (1251, 20629), (1263, 20433), (2919, 8841), (2947, 8757), (3789, 6811)]