18900284

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{383}}^1$

素因数の和:486

約数の個数: 36

約数和(自身を含む): 36400896

約数和(自身を除く): 17500612

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 169, 292, 338, 383, 676, 766, 949, 1532, 1898, 3796, 4979, 9958, 12337, 19916, 24674, 27959, 49348, 55918, 64727, 111836, 129454, 258908, 363467, 726934, 1453868, 4725071, 9450142, 18900284]

約数ペア:

[(1, 18900284), (2, 9450142), (4, 4725071), (13, 1453868), (26, 726934), (52, 363467), (73, 258908), (146, 129454), (169, 111836), (292, 64727), (338, 55918), (383, 49348), (676, 27959), (766, 24674), (949, 19916), (1532, 12337), (1898, 9958), (3796, 4979)]