21417807

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2$

素因数の和:124

約数の個数: 48

約数和(自身を含む): 34318080

約数和(自身を除く): 12900273

約数列:

[1, 3, 17, 19, 23, 31, 51, 57, 69, 93, 323, 391, 437, 527, 589, 713, 961, 969, 1173, 1311, 1581, 1767, 2139, 2883, 7429, 10013, 12121, 13547, 16337, 18259, 22103, 22287, 30039, 36363, 40641, 49011, 54777, 66309, 230299, 310403, 375751, 419957, 690897, 931209, 1127253, 1259871, 7139269, 21417807]

約数ペア:

[(1, 21417807), (3, 7139269), (17, 1259871), (19, 1127253), (23, 931209), (31, 690897), (51, 419957), (57, 375751), (69, 310403), (93, 230299), (323, 66309), (391, 54777), (437, 49011), (527, 40641), (589, 36363), (713, 30039), (961, 22287), (969, 22103), (1173, 18259), (1311, 16337), (1581, 13547), (1767, 12121), (2139, 10013), (2883, 7429)]