18201728

素因数分解:

$2^7\times {\mathrm{43}}^1\times {\mathrm{3307}}^1$

素因数の和:3364

約数の個数: 32

約数和(自身を含む): 37115760

約数和(自身を除く): 18914032

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 344, 688, 1376, 2752, 3307, 5504, 6614, 13228, 26456, 52912, 105824, 142201, 211648, 284402, 423296, 568804, 1137608, 2275216, 4550432, 9100864, 18201728]

約数ペア:

[(1, 18201728), (2, 9100864), (4, 4550432), (8, 2275216), (16, 1137608), (32, 568804), (43, 423296), (64, 284402), (86, 211648), (128, 142201), (172, 105824), (344, 52912), (688, 26456), (1376, 13228), (2752, 6614), (3307, 5504)]